Buchloë

Engelm.
Treatment appears in FNA Volume 25. Treatment on page 270.

Plants perennial; usually dioecious; strongly stoloniferous, sometimes mat-forming. Culms 1-30 cm, erect, solid, mostly unbranched, those of the pistillate inflorescences much shorter than those of the staminate inflorescences; nodes mostly glabrous. Leaves basally tufted, not clustered or strongly distichous; sheaths open, rounded, often sparsely pilose near the collar; ligules membranous or of hairs; blades usually flat basally, curling when dry, glabrous or sparsely pilose, apices involute. Staminate inflorescences terminal, usually exceeding the upper leaves, panicles of 1-3 (4) racemosely arranged, unilateral, pectinate branches; branches not enclosed at maturity, spikelets densely crowded in 2 rows. Staminate spikelets with 2 florets; glumes unequal, glabrous, 1-veined or 2-veined; lemmas 3-veined, glabrous, unawned; anthers brownish to red or orange. Pistillate inflorescences terminal, panicles, partially hidden within bracteate leaf-sheaths; branches 2-3 (4), 2.5-4.5 mm, burlike, with 3-5 (7) spikelets; disarticulation at the base of the panicle branches. Pistillate spikelets with 1 floret, almost completely enclosed by the upper glumes; lower glumes irregular and reduced; branch axes and lower portion of upper glumes globose, white, indurate, terminating in 3 awnlike teeth; lemmas firmly membranous, glabrous, 3-veined, unawned or shortly 3-awned. x = 10.

Discussion

Buchloë is a monotypic genus of the central plains of North America. It is usually dioecious, infrequently monoecious, or rarely synoecious. On the basis of his molecular studies, Columbus (1999) recommended including it and several other small, usually monoecious or dioecious genera in Bouteloua. Morphologically, the segregate genera differ from Bouteloua only in their pistillate panicles and spikelets and their reproductive mode, but not in their vegetative and staminate structures. Buchloë is maintained here pending corroboration from other studies.

"decumbent" is not a number.

... more about "Buchloë"
brownish +  and red or orange +
1 +  and 3 +
Neil Snow +
Engelm. +
1 (?) +  and 3 (?) +
multiple +, , +  and single +
keeled +  and rounded +
pseudopetiolate +  and branching +
not fused +
intravaginal +, extravaginal +, branching +  and basal +
swelling +
membranous +
not pseudopetiolate +
pilose +  and glabrous +
usually linear +  and lanceolate occasionally ovate +
not enclosed +
pectinate +
triangular +  and dome--shaped +
sometimes longer +
membranous +
unbranched +  and solid +
1 cm10 mm <br />0.01 m <br /> (30 cm300 mm <br />0.3 m <br />) +
not woody +
not waisted +
capillary +
pistillate +  and staminate +
sometimes longer +
1 +  and 2 +
bisexual +  and fertile +
round +  and compressed +
reduced +
2-veined +  and 1-veined +
shorter or longer +
subtending +
unequal +
uncinate +
pistillate +  and staminate +
paniculate +  and racemose +
hollow +  and solid +
not absent +
distichous +, not clustered +  and tufted +
membranous +
sometimes longer +
of hairs +  and membranous +
inconspicuous +
concealed +  and prominent +
2 +  and 1 +
dry +  and fleshy +
spikelike +
beetle1950a +, columbus1999a +, quinn1986a +  and wenger1940a +
bracteate +  and open +
pistillate +  and staminate +
compressed +
1 (?) +  and 3 (?) +
compound +  and simple +
2 (?) +  and 3 (?) +
Gramineae +
Buchloë +
Poaceae tribe Cynodonteae +
membranous +
awnlike +
7 +  and 13 +
plant +  and mat-forming +
aquatic +  and terrestrial +