Publikationsdatum:
2015-03-06
Beschreibung:
Among a small collection of Compositae collected in Sumbawa by R. Blomberg, 1941, a new Vernonia was detected. The description follows here.
Vernonia sumbavensis Koster, nov. spec. — sectio Claotrachelus (Zoll. et Mor.) Koster (Fig. 1 a—e) — Herba, 60 cm alta, e basi caules plures virgatos, subteretes, striatos, incane villoso-tomentosos, 2—4 mm crassos emittens; internodiis ½2–3 cm longis. Radix ramosa, crassa. Folia alterna, sessilia, numerosa, linearia vel lineario-lanceolata, margine parce revoluta, repande et breviter dentata vel subintegra, apice acuta, utrinque gradatim longe attenuata, pinninervia, nervo mediano et nervis lateralibus subtus prominentibus, supra obscura scabra, leviter incano-tomentosa vel subglabra, subtus incane tomentosa, chartacea, 3½—7½ cm longa, 3—7 mm lata, superiora minora; saepe ramis brevissimis in axillis foliorum folia parva ferentes. Inflorescentia terminalis, corymbosa, 5—12 cm lata; capitula numerosa, pedunculata, campanulata, 25—35-flora, circa 1 cm longa, circa 8 mm crassa, pedunculis incane villoso-tomentosis, 2—10 mm longis, interdum apice vel ad basin bractea lineari minuta praedita; involucrum campanulatum, circa 8 mm longum, squamis 5—6-seriatis, externe gradatim brevioribus, dense incane pubescentibus, interioribus anguste oblongis, interdum purpurascentibus, apice breviter acicularibus, exterioribus squarrosis, lanceolatis, apice acicularibus; receptaculum nudum, alveolatum, glabrum, alveolis cupuliformibus; flores bisexuales, corolla infundibuliformis, 8— 10 mm longis, lobis 5, oblongo-triangularibus, apice subacutis, parce hirsutis; antherae ad basin sagittatae, apice obtusae; styli rami longi, acuti, hirsuti; achenium turbinatum, 5—6-amgulatum, dense glandulosum, circa 1½ mm longum; pappus biseriatus, setaceus, setis albis, interioribus caducis, scabris, 5—8 mm longis, exterioribus brevissimis, applanatis.
Repository-Name:
National Museum of Natural History, Netherlands
Materialart:
Article / Letter to the editor
Format:
application/pdf
Permalink
