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The grass genera of the world

L. Watson, T.D. Macfarlane, and M.J. Dallwitz

Capeochloa N.P Barker & H.P. Linder

~ Danthonia sensu lato, Merxmuellera

Type species: C. cincta (Nees) N.P. Barker & H.P. Linder.

Habit, vegetative morphology. Perennial; caespitose; geophytic (C. setacea), or not geophytic. Culms 50–250 cm high. Leaf blades tough; flat, or rolled; exhibiting multicellular glands abaxially; not pseudopetiolate; persistent. Ligule a fringe of hairs (sometimes comprising a multiple row of cilia).

Reproductive organization. Plants bisexual, all with bisexual spikelets; with hermaphrodite florets. The spikelets hermaphrodite.

Inflorescence. Inflorescence many spikeleted (up to 200); paniculate; ovate or elliptical; espatheate; not comprising ‘partial inflorescences’ and foliar organs. Spikelets not secund; pedicellate.

Female-fertile spikelets. Spikelets about 50–70; compressed laterally; presumably disarticulating above the glumes (?); disarticulating between the florets (?). Rachilla prolonged beyond the uppermost female-fertile floret, or terminated by a female-fertile floret (?). Hairy callus present. Callus blunt (as long as the rachilla internode).

Glumes two; more or less equal; about equalling the spikelets to exceeding the spikelets; long relative to the adjacent lemmas; long- pointed; awnless; similar. Lower glume much exceeding the lowest lemma; 1 nerved. Upper glume 1 nerved. Spikelets with female-fertile florets only, or with incomplete florets (?). The incomplete florets if present, distal to the female-fertile florets. The distal incomplete florets merely underdeveloped; awned.

Female-fertile florets 2–4. Lemmas similar in texture to the glumes (?); not becoming indurated; incised; conspicuously 2 lobed (the lobes pointed or apically shortly setaceous); deeply cleft (to about a third of the lemma length); awned. Awns 1; median; from a sinus; geniculate; hairless; much longer than the body of the lemma. Awn bases twisted. Lemmas hairy. The hairs not in tufts; in transverse rows, or not in transverse rows (the hairs scattered over the lemma back, or in a transverse row). Lemmas non-carinate; without a germination flap. Palea present; relatively long (exceeding the lemma sinus); entire to apically notched; awnless, without apical setae; 2-nerved; 2-keeled. Palea keels wingless; glabrous to hairy. Lodicules present; 2; ciliate, or glabrous (never with microhairs). Stamens 3. Ovary apically glabrous. Styles free to their bases; free. Style bases adjacent. Stigmas 2.

Fruit, embryo and seedling. Disseminule a free caryopsis (? - fruit not known ...). Fruit not grooved.

Transverse section of leaf blade, physiology. Presumeably C3.

Classification. Watson & Dallwitz (1994): not described separately. Soreng et al. (2015): Danthonioideae; Danthonieae. 3 species (C. arundinacea, C. cincta, C. setacea).

Distribution, phytogeography, ecology. South Africa, Cape.

Cape.

References, etc. Morphological/taxonomic: Linder et al. (2010).

Special comments. Fruit data wanting. Anatomical data wanting.


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Cite this publication as: ‘Watson, L., Macfarlane, T.D., and Dallwitz, M.J. 1992 onwards. The grass genera of the world: descriptions, illustrations, identification, and information retrieval; including synonyms, morphology, anatomy, physiology, phytochemistry, cytology, classification, pathogens, world and local distribution, and references. Version: 13th November 2017. delta-intkey.com/grass’.

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