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POGONONEURA biflora Napper [family POACEAE]
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, Part (Part 2), page 177, (1974) Author: W. D. CLAYTON, S. M. PHILLIPS AND S. A. RENVOIZE
Names
POGONONEURA biflora Napper [family POACEAE], in Kirkia 3: 112 (1963); G.T.: 26 (1965). Type: Tanzania, 80 km. from Seronera via Musabi Guard Post, Greenway 10091 (EA, holo.!, K, iso.!)
Information
Slender tufted annual; culms 28–70 cm. high, spreading and branching near the base, then ascending, leafy. Leaf-blades up to 12 cm. long, 3–5 mm. wide, usually folded, tough, glaucous, conspicuously nerved on the lower surface, pilose on the upper surface, sometimes sparsely, the margins cartilaginous and pectinate-ciliate. Inflorescence 12–28 cm. long, elliptic to narrowly elliptic-oblong; racemes 12–25, straight, ascending, up to 6.5 cm. long. Spikelets narrowly fusiform, 2-flowered, often with a third minute vestigial floret, 5–6 mm. long, overlapping by up to a third of their length, greyish green or olive-green; glumes glabrous, scabrid on the nerve, the tips subacute; lower glume narrowly lanceolate-oblong, 4.5–5.1 mm. long, almost encircling the spikelet at the base, persistent; upper glume linear-oblong, 5.4–5.9 mm. long, falling at the same time as the florets; lemmas elliptic-oblong, 2.7–3.2 mm. long, sericeous on the back around the midnerve with hyaline very closely appressed hairs which obscure the 2-lobed tip, the margins densely fringed with soft erect grey-green hairs reaching 0.75 mm. in the upper half; awn 1 mm. long; palea-keels close together and glabrous in the lower third, then spreading apart and densely fringed in the same manner as the lemma-margins. Caryopsis 1.3–1.6 mm. long. Fig. 83.
Range
DISTR. U1; T1 not known elsewhere
Altitude range
1230–1830 m.
Distribution
TANZANIA Mwanza District Ukiriguru, 15 Mar. 1968, Kihongo 3715!TANZANIA Kwimba District Ngudu, 1934, Lewys-Lloyd 311!TANZANIA Musoma District Musabi-Nyamuma Guard Post, 20 Apr. 1962, Greenway, Turner & Watson 10620 !UGANDA Karamoja District Moroto, J. Wilson 44! & May 1954, J. Wilson 25 ! & J. Wilson 190 !
Notes
A rather rare grass, readily recognizable by its narrow spikelets with their long encircling glumes, and by the very characteristic long dense grey-green hairs on the lemma-margins and palea-keels.
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, Part (Part 2), page 177, (1974) Author: W. D. CLAYTON, S. M. PHILLIPS AND S. A. RENVOIZE
Names
POGONONEURA biflora Napper [family POACEAE], in Kirkia 3: 112 (1963); G.T.: 26 (1965). Type: Tanzania, 80 km. from Seronera via Musabi Guard Post, Greenway 10091 (EA, holo.!, K, iso.!)
Information
Slender tufted annual; culms 28–70 cm. high, spreading and branching near the base, then ascending, leafy. Leaf-blades up to 12 cm. long, 3–5 mm. wide, usually folded, tough, glaucous, conspicuously nerved on the lower surface, pilose on the upper surface, sometimes sparsely, the margins cartilaginous and pectinate-ciliate. Inflorescence 12–28 cm. long, elliptic to narrowly elliptic-oblong; racemes 12–25, straight, ascending, up to 6.5 cm. long. Spikelets narrowly fusiform, 2-flowered, often with a third minute vestigial floret, 5–6 mm. long, overlapping by up to a third of their length, greyish green or olive-green; glumes glabrous, scabrid on the nerve, the tips subacute; lower glume narrowly lanceolate-oblong, 4.5–5.1 mm. long, almost encircling the spikelet at the base, persistent; upper glume linear-oblong, 5.4–5.9 mm. long, falling at the same time as the florets; lemmas elliptic-oblong, 2.7–3.2 mm. long, sericeous on the back around the midnerve with hyaline very closely appressed hairs which obscure the 2-lobed tip, the margins densely fringed with soft erect grey-green hairs reaching 0.75 mm. in the upper half; awn 1 mm. long; palea-keels close together and glabrous in the lower third, then spreading apart and densely fringed in the same manner as the lemma-margins. Caryopsis 1.3–1.6 mm. long. Fig. 83.
Range
DISTR. U1; T1 not known elsewhere
Altitude range
1230–1830 m.
Distribution
TANZANIA Mwanza District Ukiriguru, 15 Mar. 1968, Kihongo 3715!TANZANIA Kwimba District Ngudu, 1934, Lewys-Lloyd 311!TANZANIA Musoma District Musabi-Nyamuma Guard Post, 20 Apr. 1962, Greenway, Turner & Watson 10620 !UGANDA Karamoja District Moroto, J. Wilson 44! & May 1954, J. Wilson 25 ! & J. Wilson 190 !
Notes
A rather rare grass, readily recognizable by its narrow spikelets with their long encircling glumes, and by the very characteristic long dense grey-green hairs on the lemma-margins and palea-keels.
Date Updated: 19 August 2007
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora of Tropical East Africa
Resource Type
Reference Sources
Entry From
Flora of Tropical East Africa, Part (Part 2), page 177, (1974) Author: W. D. CLAYTON, S. M. PHILLIPS AND S. A. RENVOIZE
Names
POGONONEURA biflora Napper [family POACEAE], in Kirkia 3: 112 (1963); G.T.: 26 (1965). Type: Tanzania, 80 km. from Seronera via Musabi Guard Post, Greenway 10091 (EA, holo.!, K, iso.!)
Information
Slender tufted annual; culms 28–70 cm. high, spreading and branching near the base, then ascending, leafy. Leaf-blades up to 12 cm. long, 3–5 mm. wide, usually folded, tough, glaucous, conspicuously nerved on the lower surface, pilose on the upper surface, sometimes sparsely, the margins cartilaginous and pectinate-ciliate. Inflorescence 12–28 cm. long, elliptic to narrowly elliptic-oblong; racemes 12–25, straight, ascending, up to 6.5 cm. long. Spikelets narrowly fusiform, 2-flowered, often with a third minute vestigial floret, 5–6 mm. long, overlapping by up to a third of their length, greyish green or olive-green; glumes glabrous, scabrid on the nerve, the tips subacute; lower glume narrowly lanceolate-oblong, 4.5–5.1 mm. long, almost encircling the spikelet at the base, persistent; upper glume linear-oblong, 5.4–5.9 mm. long, falling at the same time as the florets; lemmas elliptic-oblong, 2.7–3.2 mm. long, sericeous on the back around the midnerve with hyaline very closely appressed hairs which obscure the 2-lobed tip, the margins densely fringed with soft erect grey-green hairs reaching 0.75 mm. in the upper half; awn 1 mm. long; palea-keels close together and glabrous in the lower third, then spreading apart and densely fringed in the same manner as the lemma-margins. Caryopsis 1.3–1.6 mm. long. Fig. 83.
Range
DISTR. U1; T1 not known elsewhere
Altitude range
1230–1830 m.
Distribution
TANZANIA Mwanza District Ukiriguru, 15 Mar. 1968, Kihongo 3715!TANZANIA Kwimba District Ngudu, 1934, Lewys-Lloyd 311!TANZANIA Musoma District Musabi-Nyamuma Guard Post, 20 Apr. 1962, Greenway, Turner & Watson 10620 !UGANDA Karamoja District Moroto, J. Wilson 44! & May 1954, J. Wilson 25 ! & J. Wilson 190 !
Notes
A rather rare grass, readily recognizable by its narrow spikelets with their long encircling glumes, and by the very characteristic long dense grey-green hairs on the lemma-margins and palea-keels.
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