Part 2, 1912] POACEAE 141 
TYPE LOCALITY: ‘‘ America calidior,”’ 
DISTRIBUTION : Known definitely only from the Palisadoes, Jamaica. 
ILLUSTRATION: Kunth, Enum.1: Suppl. p/. 38, f. 2. 
36. SCHAFFNERELLA Nash. 
Schajfnera Benth. in Hook. Ic. Pl. 14: 59. 1882. Not Schaffneria Fée, 1857. 
Low annual grasses, with diffusely branching stems, short leaf-blades, and the spikelets 
borne singly in short partly included spikes, the lower ones sometimes single, the upper ones 
in fascicles of 2-several. Spikelets 1-flowered, perfect, or the terminal one sometimes sterile 
or empty; empty basal scale 1, its body about one half as long as the flowering scale, 7-9- 
nerved, 3-5-awned, the lateral awns usually with a tooth or lobe at the base; flowering scale 
membranous, shortly 2-lobed at the apex, an awn arising between the lobes; palet a little 
shorter than the scale, thinly hyaline, 2-nerved, obtuse or 2-toothed at the apex. Stamens 3. 
Styles 2, elongate, distinct, slender. Stigmas shortly plumose. 
Type species, Schaffnera gractlis Benth. 
1. Schaffnerella gracilis (Benth.) Nash. 
Schaffnera gracilis Benth. in Hook. Ic. Pl. 14: 59, 1882. 
Stems up to 2.5 dm. tall, slender, with long internodes; leaf-sheaths broad and strongly 
striate, with hyaline margins which run into the ligule; blades 5-20 mm. long, 1-1.5 mm. wide, 
linear to linear-lanceolate, rough, acute; inflorescence 1-2 cm. long; spikelets 5-6 mm. long, 
exclusive of the awns, the first scale with the awns longer than the body, the flowering scale 
with the awn shorter than itself. 
TYPE LOCALITY: Mountains of San Miguelito, in the valley of San Luis Potosi, Mexico. 
DISTRIBUTION: Known only from the tvpe locality. 
ILLUSTRATIONS: Hook. Ic. Pl. p/. 1378 ; Beal, Grasses N. Am. 2: f. 19. 
37. FOURNIERA Scribn. Bull. U. 8. Dep. Agr. Agrost.4: 7. 1897. 
Dioecious, extensively creeping grasses, with a spicate inflorescence, the deciduous spike- 
lets dissimilar, alternate, solitary and sessile at the notches of a continuous flexuous rachis 
which is extended into a 2-cleft prolongation. Staminate spikelets 2-flowered, the first flower 
sessile, the other on a stipe formed by the internode of the rachilla which is not extended 
beyond the flowering scale; empty basal scales 3, 1-nerved, 2 small, the other larger; flowering 
‘scales 3-nerved, 3-toothed at the apex, the midnerve extending into a short awn; stamens 3. 
Pistillate spikelets 1-flowered, the rachilla extending into a 3-awned prolongation; empty basal 
scales 3, cuneate, rounded or truncate at the apex, 2 at the base of the flowering scale, one 2- 
or 3-nerved, the other 3—5-nerved, the third scale a little narrower and usually i-nerved and 
ssomewhat 3-lobed at the apex; flowering scale on a short stipe, 3-nerved, 3-toothed at the 
apex, the central tooth the longest and sometimes 2-toothed, the midnerve projecting beyond 
the teeth as an awn; styles distinct; stigmas plumose. 
Type species, Fourniera mexicana Scribn. 
1. Fourniera mexicana Scribn. Bull. U. S. Dep. Agr. 
Agrost. 4: 8. 1897. 
Stems rooting at the lower nodes and there forming tufts of erect or ascending branches 
up to 3 dm. tall; leaf-sheaths smooth; blades up to 8 cm. long and 2 mm. wide, somewhat 
rough beneath, glabrous or sparingly pubescent on the upper surface; spikes terminal and 
axillary, sometimes 3 or 4 from the uppermost leaf-sheath, 1.5-3 cm. long, bearing 3-15 spike- 
lets; staminate spikelets 4-5 mm. long, the 2 empty scales at the base of the first flowering 
scale about 1 mm. long, the third empty scale broader and about 2 mm. long, the first flowering 
scale 3 mm. long, thin-membranous, glabrous, entire or indistinctly 3-toothed at the apex, the 
second flowering scale about 4 mm. long, including the short awn, glabrous; pistillate spikelets 
about 4 mm. long, excluding the awns, the 3 awns of the prolongation of the glabrous rachilla 
6-8 mm. long, ciliate on the margins, the empty scales 2-3 mm. long, scabrous, densely pilose 
at the base, the flowering scale 3 mm. long. 
