Compilation
Crotalaria rogersii

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Name

Identification
Crotalaria rogersii Baker f. [family FABACEAE ] Verified by Not on sheet, Crotalaria rogersii Baker f. [family FABACEAE ] (stored under name); Verified by Not on sheet,
Related name
  • Crotalaria capensis
  • Crotalaria unrecorded
  • Crotalaria rogersii

Flora

Entry for Crotalaria rogersii Baker f. [family LEGUMINOSAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Zambesiaca
Resource Type
Reference Sources
Entry From
FZ, Vol 3, Part 7, (2003) Author: various authors
Names
Crotalaria rogersii forma kilwaensis R. Wilczek [family LEGUMINOSAE], in Bull. Jard. Bot. État 23: 151 (1953); in F.C.B. 4: 168 (1953). Type from Dem. Rep. Congo (Katanga).
Crotalaria pallida [family LEGUMINOSAE], sensu Moriarty, Wild Fl. Malawi: 128, t. 64, fig. 3 (1975).
Crotalaria rogersii Baker f. [family LEGUMINOSAE], in J. Linn. Soc., Bot. 42: 347 (1914). —Eyles in Trans. Roy. Soc. South Africa 5: 371 (1916). —Verdoorn in Bothalia 2: 399 (1928). —Wilczek in F.C.B. 4: 167 (1953). —Binns, First Check List Herb. Fl. Malawi: 79 (1968). —Polhill in F.T.E.A., Leguminosae, Pap.: 906 (1971). —Drummond in Kirkia 8: 218 (1972). —Jacobsen in Kirkia 9: 160 (1973). —Polhill, Crotalaria Africa & Madagascar: 186 (1982). —Lock, Leg. Afr. Check-list: 201 (1989). Lectotype, selected by Polhill (1971): Zambia, Mazabuka, F.A. Rogers 8330 (K, lectotype; SRGH).
Information
Erect or rarely decumbent perennial herb, with 1–several simple to much branched stems from a woody rootstock (but also flowering in first year of growth), up to 2.7 m tall; branches densely covered with short appressed or crisped hairs. Leaves 3-foliolate; leaflets mostly 4–8.5 × 1.5–5.5 cm, oblanceolate-elliptic to broadly elliptic or obovate-elliptic, appressed puberulous beneath, often rather glaucous; petiole shorter to longer than the leaflets; stipules 1–4 mm long, filiform to linear-caudate, caducous, or lacking. Flowers similar to C.pallida, but the standard and more particularly the keel often flushed purple; beak of the keel slightly more incurved. Pod shortly stipitate, 2.8–3.5 × 0.6–0.9 cm, subcylindrical, appressed puberulous, often glabrescent, 18–28-seeded. Seeds 3.5–4 mm long, oblique-cordiform, minutely papillose, greenish-brown or mottled.
Habitat
Disturbed places in woodland and savanna, also damp places by lakes, rivers and in dambos or flood plains, persisting on cultivated ground
Altitude range
600–1700 m.
1700
600
Distribution
Malawi S Zomba, fl. Sharpe 36 (K).Malawi C Lilongwe Distr., Chankhandwe Dambo, fl. 26.viii.1950, Jackson 83 (BM; BR; K).Zimbabwe C 14 km Harare–Domboshawa, Hatcliffe South, fl. 26.ix.1955, Drummond 4878 (BR; K; LISC; SRGH).Zambia S Choma Distr., Mapanza, fl. & fr. 13.viii.1958, E.A. Robinson 2876 (K; SRGH).Zambia E Lundazi, fl. & fr. 17.x.1967, Mutimushi 2276 (K; NDO; SRGH).Zambia C Lusaka Distr., Chilanga, fl. & fr. immat. 13.ix.1963, Farrell 388 (K; SRGH).Zambia W Kitwe, fl. & fr. 18.vi.1955, Fanshawe 2338 (K; NDO; SRGH).Zambia N Mbala Distr., L. Chila, fl. & fr. 13.v.1955, Richards 5707 (K; SRGH).Malawi N Karonga Distr., Nyungwe R., fl. 15.x.1930, Migeod 981 (BM).Zimbabwe N Mazowe (Mazoe) R., fl. viii.1905, Eyles 181 (BM; SRGH).Zambia B Kalabo, fl. & fr. 16.xi.1959, Drummond & Cookson 6511 (K; LISC; SRGH).
Distribution (external)
Tanzania
Dem. Rep. Congo (Katanga)
Notes
Plants in their first year of growth are not always easy to distinguish from C. pallida until the characteristic pods are formed. The petals are often characteristically flushed purple, but pure yellow or faintly lined flowers may be found within single populations, see for example Brenan & Greenway in Brenan 7716 (K) or Richards 5463 (K). The species is fairly resistant to burning and grazing and shows accordingly considerable variation in habit and vegetative features.

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