ALBERT

Description: In my first paper (1951) a part of the tribe Eupodostemeae was revised, viz. the genera Apinagia, Marathrum, Rhyncholacis, Lophogyne, Monostylis, Jenmaniella, Wettsteiniola and Macarenia. The second part deals with the subfamily Tristichoideae, which comprises the genera Tristicha and Weddellina, and the tribe Mourereae of the subfamily Podostemoideae, which consists of the genera Mourera, Lonchostephus, and Tulasneantha.

Description: As has been stated in the introduction of the second part, this third part will include the remainder of the American part of the tribe Eupodostemeae of the subfamily Eupodostemoideae which was not treated in part I, viz. the genera Oserya, Devillea, Ceratolacis, Mniopsis, Podostemum and Castelnavia. Included are the dubious genera, and it also contains additions and corrections to part I, latin descriptions of new taxa, a list of collectors’ numbers in this part, new references to the literature, and a general index to the third part. The attention of the reader is drawn to a publication of SZAFER (1952) in which a fossil Podostemacea from Europe has been described. As I have not seen the material it is at present impossible to judge the value of the discovery though it seems highly improbable that Podostemaceae ever lived in Europe.

Description: Dioecious or monoecious small shrubs with thick woody roots. Leaves simple, opposite, sessile, fleshy, with a distinctly saccate, colourless base. Stipules minute. Flowers unisexual, either solitary and terminal or axillary, or in small axillary spikes. ♂ Flowers subtended by bracts, enclosed in a membranous spathella which opens with one or two transverse or radial slits giving rise to 2-4 lobes. Tepals 4, valvate. Stamens 4, alternitepalous; anthers dorsifixed, introrse, dehiscing lengthwise with 2 slits. Sometimes an abortive gynaecium present. ♀ Flowers merely consisting of a naked ovary, in the axil of leaves when solitary, in the axil of cordate bracts when growing in spikes, 2-carpellate, 4-celled by one true and one false septum; ovules 1 in each cell, basal, anatropous, with a long funicle. Stigmas 2, sessile, distinctly papillate. Fruit a septicidal berry dehiscing with 2 valves, either solitary or many united together with the bracts into a connate, spikelike whole. Seeds with a large, straight embryo, exalbuminous. Distr. The Batidaceae, consisting of one genus with two species, show a remarkably discontinuous area, viz B. maritima L. growing along the Atlantic and Pacific coasts of tropical America, the Hawaiian and Galapagos Islands, while B. argillicola has hitherto only been found in South New Guinea. As the distribution of the species is still rather insufficiently known and they are confined to littoral districts it has been found advisable to include both of them in the key given below.

Description: Mostly perennial, paludose, grass-like herbs with fibrous roots; stembase very rarely thickened, often profusely producing shoots. Leaves basal, distichous on each shoot, ensiform, linear or filiform, sometimes twisted; sheaths with a membranous margin (in Mal. spp.) producing mucilage (?always), with or without a short ligule; limb glabrous or with numerous, small hard papillae, sometimes with a stout nerve in either margin. Flowers ♀♂, in terminal, few- to many-flowered heads, 3-merous, yellow to white, ephemeral, each in the axil of a conspicuous bract; bracts conchate, imbricate, spirally arranged, lower ones sterile; one to few flowers simultaneously in anthesis. Peduncles scape-like, terete to compressed, sometimes winged or ribbed, glabrous or with numerous hard papillae, at the base with some sheaths provided with a short limb. Bracts entire, ciliate, fimbriate or lacerate, with one complete main nerve and some complete or incomplete longitudinal secondary (descending) nerves, in the apical part mostly with a small minutely-papillose field. Calyx zygomorphic; lateral sepals navicular, with entire, dentate or ciliate crest, wings membranous, entire, glabrous or ciliate; median sepal membranous, spathelliform or cap-shaped, enveloping the corolla, mostly obovate, 1-3(-5)-nerved, pushed out by the corolla in anthesis(?always). Corolla actinomorphic, ephemeral; petals with an orbicular to obovate limb and a long, narrow claw, free, cohering mutually or by the staminodes. Stamens mostly 3 fertile epipetalous inserted on the petals and 3 alternating staminodes, staminodes rarely absent, or all stamens fertile; filaments short; anthers basifix, dehiscing lengthwise extrorsely. Ovary superior, sessile to stipitate (in Australian spp. sometimes with 3 hard swellings at the top), 1- or 3-celled, or incompletely 3-celled. Placentas parietal, central, or basal, with ~ ovules; styles filiform, apex 3-fid, stigmas mostly capitate. Fruit shape similar to that of the ovary but larger, loculicidally 3-valved. Seeds ellipsoid to obovoid, often ribbed, with a long funicle. Distr. Xyridaceae are confined to the tropics throughout the world including the southern parts of North America; east of Malaysia and Australia hitherto only recorded from the Patau group (Korror) and New Caledonia.

Description: In the course of studying the Asteraceae for a proposed Alpine Flora of New Guinea the first author selected the genus Cotula for this separate paper as it showed some variability that was not easily explained. While working on this, Dr. Lloyd’s paper on the genus in the New Zealand Journal of Botany 10 (1972) 277, came to his notice and on corresponding with him it turned out that he had studied the New Guinea species already to some extent but had nothing ready for publication. At the same time, Dr. J. Koster of Leiden, Netherlands, was known to work on a study of all Asteraceae of New Guinea and it soon transpired that when the manuscript was finished and a copy sent to her that very same day she had put down the first words of her manuscript on this genus. She generously allowed us to go ahead with our publication and after Dr. Lloyd had reviewed the first author’s manuscript the paper developed as presented here. This group of small, mat-forming species has been known in New Guinea to date only by C. leptoloba Mattfeld, described from the Wharton Ra. in Papua. Since then, however, it has been collected in several other regions ranging from the Carstensz Mts. in West New Guinea to Mt. Aniata in the southeastern tip of Papua. At first glance the material looked rather homogenous, but on closer look it turned out that at least one species, the material from Mt. Wilhelmina, had to be taken out as new. At this stage, various papers by Dr. Lloyd from Christchurch, New Zealand, drew attention to the group more forcibly and critically. The material available was studied by Dr. Lloyd and he came to the conclusion that at least 4 species should be distinguished, with which the senior author could concur. The differences between the 4 species recognised here are considerable, but the species limits are not well known and the descriptions may need revising when further material is available. Three new species are described below and C. leptoloba is redescribed to include the variation observed in specimens from new localities.

Description: Trees; leaves with caducous stipules; tertiary nervation descendant, but usually lax and irregular; inflorescences clustered, axillary, manyflorous; calyx with two rows of four lobes each; corolla 8-merous, each lobe with 2 dorsal segments as long as itself; stamens epipetalous, 8, in the same row as the 8 alternipetalous staminodes; ovary usually 8-celled; cells 1-ovuled, ovules anatropous, attached at the base; fruit a berry, 1—2-seeded; seeds with a small, circular, basal scar, in which the hilum and the micropyle are placed close to one another; albumen abundant; cotyledons thin, foliaceous; radicle long, cylindrical, exsert — About 80 species in all tropical countries, except in America. In 1925, Lam (Bull. Jard. Bot. Bzg, sér. 3, 7, 1925, 235—237) described of M. elengi three varieties, var. typica, var. parvifolia and var. brevifolia and a forma longepedunculata in the type-variety. As was pointed out already by him, the differences between the two new varieties are slight, if existing at all. As those between M. elengi and M. parvifolia were obscured by many intermediate stages Lam was forced to consider the latter a variety of the former. Studying the more abundant material at our disposal it becomes clear that M. elengi is an extremely variable species in which it is impossible to distinguish varieties or forms. However, it must be pointed out that in the western parts of the Archipelago the leaves are large (up to 18 cm long), whereas they are decreasing in size towards the east, ending in the small leaves of the former species M. parvifolia (up to 6 cm long).

Description: In deze publicatie is een deel der Amerikaanse Podostemaceae van de onderfamilie Podostemoideae opgenomen nl. de nauw verwante geslachten Apinagia, Marathrum, Rhyncholacis, Wettsteiniola, Lophogyne, Monostylis, Jenmaniella en het nieuwe geslacht Macarenia. Nagegaan wordt waarom deze geslachten verwant zijn. Uit het onderzoek is gebleken dat de geslachten Apinagia en Oenone, zoals die beschreven werden door Tulasne in 1852, niet als twee afzonderlijke geslachten gehandhaafd kunnen blijven. De indeling van de onderfamilie Podostemoideae, zoals Engler die in 1930 gaf, is gewijzigd in die zin dat de subtribus Mourerinae tot tribus is verheven en de subtribus Apinagiinae en Marathrinae met de tribus Eupodostemeae tot één tribus Eupodostemeae verenigd zijn. In het beschrijvende deel zijn de beschrijvingen van de soorten opgenomen met gegevens over type, verspreiding en vindplaatsen. Tabellen ter determinatie van de soorten zijn opgenomen. 1 Nieuw geslacht, 30 nieuwe soorten, 8 variëteiten en 2 vormen zijn beschreven. Aan deze beschrijvingen zijn de Latijnse beschrijvingen toegevoegd terwijl 16 pagina’s afbeeldingen van de nieuwe soorten en van enige oudere soorten geven. Een literatuurlijst welke alleen de Amerikaanse en de algemene literatuur omvat maken een nadere studie van deze familie mogelijk op die gebieden die in deze publicatie niet behandeld zijn.

Description: Aulandra H. J. Lam, Bull. Jard. Bot. Bzg, sér. 3, 8, 1927, 415, f. 6; H.J. Lam, Hooker Icon. Pl. 1938, t. 3360; Baehni, Candollea 9, 1942, 419 — Palaquium, § Palaquioides Dubard, Bull. Soc. Bot. Pr. 56, Mém. 16, 1909, 19. Trees. Leaves alternate, stipulate, entire, tertiary nerves transverse. Inflorescences cauliflorous, flowers terminal or axillary along short vermiform brachyblasts covered by numerous scars of bracts. Flowers bisexual, 6-merous. Sepals 6, in 2 whorls of three, united at the base. Petals 6, united at the base. Stamens 18 or 19, filaments partly tubuliformly united and the tube inserted on the corolla, anthers free, dehiscing extrorsely. Ovary 6-celled; style short or long, filiform. Fruit a berry, one-seeded, scar of seed covering almost the entire seed, albumen none.

Description: After the senior writer, together with W. W. Varossieau, had published a revision of this monogeneric family (Blumea III, 1938—’39 and IV, 1941), some more material has been examined by us and, moreover, some new species have been described. Thanks to the courtesy of Prof. F. Gagnepain of Paris, and the Director of the Musee d’Histoire Naturelle, Phanérogamic, we had the opportunity to examine the type specimens of Gagnepain's new species from Indo-China, All with all we felt that a new key and a brief enumeration of the species with the main literature, their synonyms and distribution, might be useful. SARCOSPERMATACEAE H. J. Lam, Bull. Jard. Bot. Buitenz., sér. III, 7, 1925, 248; Blumea III, 1, 1938, 184.

Description: Xantolis Raf., Sylv. Tell., 1838, 36 — Planchonella Pierre, p.p., Not. bot. Sapot., 1890, 34; Dubard, Ann. Mus. col. Mars. 20, 1912, 41; Lam, Ann. Jard. bot. Bzg, sér. 3, 7, 1925, 193; Lam, l.c., sér. 3, 8, 1927, 467 — Sideroxylon L., p.p., Engler, Nat. Pfl. Fam. 4, 1, 1897, 143 and Nachtrag, 1897, 27 — Hormogyne DC, p.p., Prodr. 8, 1844, 176 — Pouteria Aublet sensu Baehni, p.p., Candollea 9, 1942. Trees or shrubs, often spiny. Leaves alternate, estipulate, sometimes with the flowers conferted at the tips of brachyblasts, entire, with a marginal nerve, tertiary nervation transverse or reticulate, sparse, slender. Flowers ♂♀, 5-merous, solitary or clustered, axillary or sometimes along an axillary shoot, bracts small. Calyx with a short tube and mostly lanceolate lobes, marcescent. Corolla lobes longer than the tube. Stamens generally inserted at the base of the lobes, each with two small tufts of ferruginous hairs on either side of the base of the glabrous filaments, rarely only one hair, anthers sagittate, with prolonged connective, dehiscing extrorsely or slightly lateral. Staminodes petaloid, often long aristate, fimbriate-ciliate along the margin, except in X. racemosa (Dub.) van Royen and X. siamensis (Fletcher) van Royen in which the margin is either dentate or entire. Ovary 5-, rarely 4-celled, densely hirsute, disk absent; style long exsert, ovules inserted halfway up or at the base of the cells, funiculus often long. Fruits drupaceous, 1- or 2-seeded, seeds ellipsoid, laterally compressed, testa crustaceous, scar ovate or linear, as long as seed to 2/3 its length, or small and circular, basal, embryo with copious albumen and foliaceous cotyledons, radicle exserted.