Compilation
Digitaria propinqua

10 Images see all

Previous
Next

Name

Identification
Digitaria longiflora (Retz.) Pers. [family POACEAE ] (stored under name); Digitaria propinqua (R.Br.) P.Beauv. [family POACEAE ] Verified by Stanley Thatcher Blake, Panicum propinquum R.Br. [family POACEAE ]
Related name
  • Digitaria longiflora
  • Digitaria propinqua
  • Panicum propinquum

Flora

Entry for DIGITARIA radicosa (Presl) Miq. [family ]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, page 451, (1982) Author: W. D. CLAYTON and S.A. RENVOIZE
Names
DIGITARIA radicosa (Presl) Miq. [family ], Fl. Ind. Bat. 3: 437 (1857). Type: Philippine Is., Luzon, Haenke (BR, holo.!)
Digitaria propinqua Gaud. [family ], in Freycinet, Voy. Uranie, Bot.: 410 (1829), non (R. Br.) P. Beauv. (1812). Type: Timor, Gaudichaud (P, holo.)
Panicum radicosum Presl [family POACEAE], Rel. Haenk. 1: 297 (1830)
Panicum timorense Kunth [family POACEAE], Enum. Pl. 1: 83 (1833). Based on Digitaria propinqua Gaud.
Digitaria timorensis (Kunth) Balansa [family ], in Morot, Journ. de Bot. 4: 138 (1890); Clayton in F.W.T.A., ed. 2, 3: 452 (1972)
Panicum sanguinale (Kunth) Hack. var. timorense [family POACEAE], in Schmidt in Bot. Tidsskr. 24: 97 (1901)
Information
Trailing annual; culms 20–40 cm. long, very slender. Leaf-blades narrowly lanceolate, 2–7 cm. long, 2–5 mm. wide. Inflorescence digitate, of 2–4 racemes; racemes 3–9 cm. long, the spikelets binate and loosely overlapping by about 1/2 their length on a narrowly winged triquetrous rhachis with almost smooth edges. Spikelets narrowly lanceolate, 2.5–3 mm. long; lower glume an inconspicuous ovate scale up to 0.2 mm. long; upper glume 1/3–2/3 as long as the spikelet, 3-nerved; lower lemma as long as the spikelet, 5(–7)-nerved, with a wide central interspace and the lateral nerves so close together that the lemma is apparently 3-nerved, appressed or silky pubescent, very rarely with a ciliate fringe, never with bristles; fruit narrowly lanceolate, yellowish or pale brown.
Range
DISTR. T3 Mauritius and Seychelles, through tropical Asia, to the Pacific Is.; introduced in a few other places
Altitude range
700 m.
Distribution
TANZANIA Lushoto District Amani, 28 Aug. 1929, Hitchcock 24475! & 15 Apr. 1968, Renvoize & Abdallah 1491!
Notes
D. radicosa is related to D. ciliaris. It is recognized by its weak trailing culms, few digitate racemes, smooth-edged rhachis, and narrow spikelets with contiguous lateral nerves; also the upper glume is often shorter than that of D. ciliaris.

Related Materials