Bulbostylis funckii

(Steudel) C. B. Clarke

Bull. Misc. Inform. Kew, addit. ser. 8: 26. 1908

Basionyms: Isolepis funckii Steudel
Synonyms: Bulbostylis tenuispicata (Boeckeler) Barros Scirpus heterocarpus S. Watson Stenophyllus funckii (Steudel) Britton
Treatment appears in FNA Volume 23. Treatment on page 134. Mentioned on page 132, 133.
Revision as of 16:06, 18 September 2019 by Volume Importer (talk)
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Herbs, annual, densely cespitose, scapose, delicate, low. Culms 5–10(–15) cm. Leaves 1/2 as long as to slightly exceeding scapes; sheaths stramineous to reddish, dilated, strongly ribbed; blades filiform, 0.5 mm wide, flat or involute, glabrous, margins distantly scabrid. Inflorescences: spikelets of 2 sorts, one sterile, 1(–2) atop filiform scapes or short-stalked to sessile at plant base, red-brown with green midribs, lanceoloid to lance-cylindric, 5–7 mm; the other fertile, the florets developing in sheath axils at culm base; leafy involucral bracts 1, appearing as extension of culm, or absent. Spikelets: scales of sterile spikelets lanciform, keeled, midrib excurrent at mucro; fertile scales saccate, strongly ribbed, distended by achenes. Flowers: stamens 2; anthers narrowly oblong, 0.5 mm. Achenes pale, lustrous, broadly trigonous-obovoid to subglobose, the fertile 1.5 mm, the sterile 1 mm, faces slightly convex, rugulose, papillose; tubercle a small depressed or conic button. 2n = 20.

Phenology: Fruiting all year.
Habitat: Sandy disturbed sites such as roadbanks, fields, meadows, town lots, and pastures, sometimes weedy in open sandy land
Elevation: 0–3000 m

Distribution

V23 209-distribution-map.jpg

Ariz., N.Mex., Mexico, Central America, South America.

Discussion

Bulbostylis funckii is the only heterocarpous species in Bulbostylis, the achenes of proximal spikelets being nearly twice as large and more tumid than those of aerial spikelets.

References

None.

Lower Taxa

No lower taxa listed.