dcsimg

Comprehensive Description

provided by North American Flora
Bouteloua pedicellata Swallen, sp. nov
Perennial, stoloniferous; culms in small dense tufts, erect, simple, 12-23 cm. tall; stolons very slender, arching, as much as 40 cm. long; sheaths mostly overlapping, or the upper ones shorter than the internodes, scaberulous; ligule ciliate, 0.5-1 mm. long; blades involute, scabrous, 2-5 cm. long, recurved; spikes 10-22, arcuate-spreading or reflexed, falling entire, the rachis about 6 mm. long, flattened, ciliate, bearing a single spikclet attached 2-3 mm. from the base and therefore appearing pedicellate; glumes subacute, scabrous on the keel, the first 4 mm. long, the second 7 mm. long; rachilla-joint below the fertile floret 0.5 mm. long; lemma 6 mm. long, acute, glabrous, the tip minutely bifid, with an awn 0.5 mm. long from between the teeth; palea broad, nearly as long as the lemma, the nerves approximate, produced into mucros; rudiment very small, usually with a single awn a little shorter than the fertile floret. Perennis, stolonifera; culmi erecti, 12-23 cm. alti; vaginae internodiis longiores vel superiores internodiis breviores, scaberulae; ligula ciliata, 0.5-1 mm. longa; laminae 2-5 cm. longae, involutae, recurvatae, scabrae; spicae 10-22, arcuatae, divergentes vel recurvatae, rachide 6 mm. longa, plana, ciliata; spicula 1, pseudo-pedicellata; glumae subacutae, carinis scabris; gluma prima 4 mm. longa, secunda 7 mm. longa; internodius rachillae infra flosculum fertilem 0.5 mm. longus; lemma 6 mm. longum, acutum, glabrum, minute bifidum, arista 0.5 mm. longa; flosculus imperfectus minutus aristatus.
Type collected on a rocky hill, Chalchicomula, Puebla, altitude 9000 feet, August 19, 1910, A. S. Hitchcock 6302 (U. S. Nat. Herb. no. 883950).
Distribution: Known only from the type locality.
license
cc-by-nc-sa-3.0
bibliographic citation
Albert Spear Hitchcock, Jason Richard Swallen, Agnes Chase. 1939. (POALES); POACEAE (pars). North American flora. vol 17(8). New York Botanical Garden, New York, NY
original
visit source
partner site
North American Flora