154 NORTH AMERICAN FLORA {VoLumE 17 
sute with spreading hairs; blades 2-12 cm. long, 2-7 mm. wide, flat, spreading or ascending, 
papillose-hirsute; panicle long-exserted, its axis 4 cm. long or less; racemes 4-13, 4-13 cm. 
long, finally widely spreading, usually in a whorl at the base and the remainder alternate or 
approximately in pairs, the lateral angles of the rachis winged; spikelets 1.75-2.5 mm. long, 
lanceolate, acuminate, in pairs, occasionally with a delicate basal bristle, on 3-angled pedicels, 
the angles hispidulous, the first scale minute, triangular, glabrous, the second scale abut one 
half as long as the spikelet, 3-nerved, appressed-pubescent, the third scale 7-nerved, appressed- 
pubescent, the fruiting scale slightly less than 2 mm. long, noticeably shorter than the third 
scale, elliptic, greenish when mature. 
TYPE LOCALITY: Jamaica, 
DISTRIBUTION: Florida; Bermuda; Bahamas; tropical America. 
ILLUSTRATION: Field Columb. Mus. Publ. Bot. 3: 26, /. 
13. Syntherisma sanguinale (1,.) Dulac, Fl. Hautes-Pyr. 77. 1867. 
Panicum sanguinale ¥,. Sp. Pl. 57. 1753. 
Digitaria sanguinalts Scop. Fl, Carn. ed. 2.1: 52. 1772. 
Panicum ciliare Retz. Obs. 4: 16. 1786. 
Syntherisma praecox Walt. Fl. Car. 76. 1788. 
Paspalum sanguinale lam. Tab. Encye. 1: 176. 1791. 
Stems 1 m. long or less, at first erect, finally prostrate at the base and rooting at the 
lower nodes; leaf-sheaths loosely embracing the stem, at least the lower densely papillose- 
hirsute; blades 4-20 cm. long, 4-10 mm. wide, flat, erect or ascending, papillose-hirsute; 
panicle finally exserted, the axis 1 cm. long or less; racemes 3-10, 5-18 cm. long, erect or ascend- 
ing, usually digitate, sometimes with an approximate pair or two above or below, the rachis 
with the angles broadly winged; spikelets about 2.5 mm. long, elliptic-lanceolate, acute, in 
pairs on 3-angled pedicels, the angles hispidulous, the first scale minute, triangular, glabrous, 
the second scale about one half as long as the spikelet, ovate-lanceolate, 3-nerved, appressed_ 
pubescent, the third scale about as long as the fruiting scale, 7-nerved, appressed-pubescent , 
the nerves hispid above, the fruiting scale yellowish-white, acutely apiculate, elliptic-lanceolate 
TYPE LOCALITY : Southern Europe. 
DISTRIBUTION: Along roadsides and in fields and waste places, mainly in the north; also 
throughout the Old World. 
ILLUSTRATIONS: Bull. U. S. Dep. Agr. Agrost.17: 7.339; Vasey, Agr. Grasses U.S. £1. 4; ed. 
2. pl. 15; Britt. & Brown, Ill, Fl. f. 240; Torr. Fl. N. Y. pl. 146; Bull. Tenn. Exp. Sta. 7: f 26. 
14. Syntherisma marginatum (Link) Nash. 
? Panicum adscendens H.B.K. Nov. Gen. & Sp.1: 97. 1815. 
Digitaria marginata Link, Enum. Hort. Berol. 1: 102. 1821. 
Digitaria fimbriata Link, Hort. Berol. 1: 226. 1827. 
Panicum Linkianum Kunth, Rév. Gram. 33. 1829. 
? Panicum inaequale Fourn. Mex. Pl. Gram. 17, 1881. 
Syntherisma fimbriatum Nash, Bull. Torrey Club 25: 302. 1898. 
Syntherisma barbatum Nash, Bull. Torrey Club 25: 303. 1898. 
Stems 8 dm. long or less, at length prostrate at the base and rooting at the lower nodes; 
leaf-sheaths densely papillose-hirsute with spreading hairs, rarely glabrous; blades up to 8 cm. 
long, 3-10 mm. wide, flat, glabrous or pubescent; panicle long-exserted, the axis 2 cm. long or 
less; racemes 2-9, 2-12 cm. long, erect or ascending, alternate, in pairs or whorls, or various 
combinations of these, the rachis with the lateral angles winged; spikelets 3-4 mm. long, lance- 
olate, acute, in pairs on 3-angled pedicels, the first scale minute, triangular, glabrous, the second 
and third scales pubescent with long hairs which usually become spreading, the second scale 
3-nerved, three fifths to four fifths as long as the spikelet, lanceolate-cuneate, the third scale 
7-nerved, the fruiting scale elliptic to elliptic-lanceolate, acute, yellowish-white. 
TYPE LOCALITY: Brazil. 
DISTRIBUTION : Maryland to Utah, south to Florida and Mexico; Bermuda; Bahamas; also in 
tropical South America. 
ILLUSTRATION: Field Columb. Mus. Publ. Bot. 3: 25, 7. 
45. LEPTOLOMA Chase, Proc. Biol. Soc. Wash. 19: 191. 1906. 
Perennials with tufted branching brittle stems, flat leaf-blades, and diffuse panicles which 
break away readily at maturity. Spikelets articulated to the pedicel below the scales, 1- 
flowered, fusiform, solitary or rarely in 2’s. Scales 3 or 4; first scale minute or obsolete; second 
