Compilation
Geigeria alata

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Name

Identification
Geigeria angolensis O.Hoffm. [family ASTERACEAE ] (stored under name); Verified by Merxmuller, Hermann, 1953 Geigeria alata Benth. & Hook.f. ex Oliv. [family ASTERACEAE ] Verified by s.det., Geigeria angolensis O.Hoffm. [family ASTERACEAE ] Verified by s.det.,
Related name
  • Cichorium spinosum
  • Diplostemma alatum
  • Cichorium alatum
  • Geigeria odontoptera
  • Diplostemma unrecorded
  • Geigeria angolensis
  • Geigeria spinosa
  • Berkheya unrecorded
  • Geigeria alata

Flora

Entry for GEIGERIA alata (DC.) Oliv. & Hiern [family COMPOSITAE]
Herbarium
Royal Botanic Gardens, Kew (K)
Collection
Flora Somalia
Resource Type
Reference Sources
Entry From
Flora Somalia, (2000) Author: by H. Beentje (Acanthospermum, Ageratum, Aspilia, Atractylis, Blainvillea, Blumea, Carthamus, Cirsium, Conyza, Crepis, Dichrocephala, Distephanus, Echinops, Eclipta, Erlangera, Felicia, Flaveria, Geigera, Gerbera, Grangea, Gutenbergia, Helichrysum, Iphiona, Iphionopsis, Jurinea, Laggera, Litogyne, Osteospermum, Pegolettia, Pentanema, Pseudoblepharispermum, Pseudognaphalium, Psiadia, Pulicaria, Reichardia, Sclerocarpus, Sonchus, Sphaeranthus, Tagetes, Tarchonanthus, Tridax, Vernonia, Volutaria, Xanthium), T. Eriksson (Athroisma, Blepharispermum), N. Kilian (Launaea), S. King-Jones & M. Thulin (Pluchea), Mesfin Tadesse (Bidens), S. Ortiz & J. Rodríguez-Oubiña (Dicoma), and M. Thulin (Cineraria, Doellia, Emilia, Erythroseris, Euryops, Galinsoga, Gynura, Helianthus, Kleinia, Lactuca, Pentzia, Senecio, Solanecio, Verbesina, Zinnia). [updated by M. Thulin 2008]
Names
GEIGERIA alata (DC.) Oliv. & Hiern [family COMPOSITAE], (1877);
Diplostemma alatum DC. [family COMPOSITAE], (1838). Fig. 348. [type as above]
Information
Annual herb, usually up to 10 cm high but in temporarily swampy sites to 35 cm high; stems usually much-branched, minutely scabridulous, with continuous wings up to 3 mm wide. Leaves subopposite, sessile, lanceolate, 2–5(–8) x 0.4–1.5(–2.5) cm, base cuneate and decurrent, margins obscurely denticulate, apex acute with a spiny point, scabridulous and glandular on both surfaces. Capitula solitary in leaf-axils and branching points, sessile; involucre 7–14 mm long; phyllaries of two kinds, the outermost distally green and foliose to 14 mm long, the inner ones cream, ovate, 2–8 mm long, tapering to a spiny and outcurving tip, ciliate, glandular (on the leafless parts of the plants old capitula may appear densely clustered). Florets yellow, 10–12; outer florets with ray c. 2.5 mm long, 0.6–0.8 mm wide; inner florets 2.2–4.5 mm long. Achenes ellipsoid, 0.8–1.1 mm long, densly hairy; pappus of membranous scales, those of the inner series awned and to 2 mm long.
Range
N1–3; S1 drier parts of Africa and Saudi Arabia, Yemen.
Altitude range
150–1000 m.
Distribution
SOMALIA Glover & Gilliland 638; Gillett & Beckett 23536; Thulin & Bashir Mohamed 6936.
Distribution (external)
Djibouti
Ethiopia
Kenya

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