﻿Nash : Genus Syntherisma in North America 301 



whorl at the base and the remainder alternate or approximately in 

 pairs, the rachis triangular, the lateral angles winged, the wings 

 about . 1 5 mm. wide, hispidulous on the margins : spikelets about 

 2.5 mm. long, about .5 mm. wide, lanceolate, acuminate, in pairs, 

 occasionally with a delicate basal bristle, on 3-angled pedicels, the 

 angles hispidulous ; first scale minute, triangular, glabrous, the 

 second scale about one -half as long as the spikelet, 3-nerved, the 

 margins and internerves pubescent with appressed hairs, the third 

 scale 7 -nerved, the margins and second internerve on each side 

 pubescent with appressed hairs, the fourth scale slightly less than 

 2 mm. long, noticeably shorter than the third scale, elliptic, green- 

 ish when mature ; palet of equal length and similar texture. 



Dry sandy soil, Florida. Also in the West Indies and South 

 America. 



10. Syntherisma saxguinalis (L.) Dulac, Fl. Hautes-Pyr. yj. 



1867. 



Panicinu sanguinalc L. Sp. PI. 57. '1753- 



Digitaria sanguinalls Scop. FL Cam. Ed. 2, 1 : 52. I77 2 - 

 Syntherisma praecox Walt. Fl. Car. 76. 1788. 



Paspalum sanguinalc Lam. Encycl. 111. I : 176. I79 1 - 



Panicum ciliare Retz. Obs. 4 : 16. 1779-91. 



Culms 1 meter or less long, at first erect, at length branched, 

 finally prostrate at the base and rooting at the lower nodes, 



mooth and glabrous ; nodes, 3-many ; culm leaves 3-many; 



heaths loosely embracing the culm, shorter than the internodes, 

 the lower densely papillose-hirsute, the upper sparingly so or 

 glabrous ; ligule a scarious ring 1-2 mm. long ; blades 4-20 

 cm. long, usually less than 10 cm., 4-10 mm. vide, flat, erect or 

 ascending, more or less papillose-hirsute on both surfaces, rough 

 on the margins ; panicle finally exserted, sometimes much so, the 

 axis 1 cm. or less long, smooth and glabrous: racemes 3-10, 

 usually 5 or 6, 5-18 cm. long, commonly 8-12 cm., erect or 

 ascending, very rarely spreading, minutely pubescent at the base, 

 usually digitate, sometimes with an approximate pair or two above 

 or below the whorl, the rachis triangular, the angles broadly 

 Winged, the wings .3-. 5 mm. wide, hispidulous on the margins; 

 spikelets 2.5-3 mm- long, about .8 mm. wide, elliptic-], iceolate, 



Kute, in pairs, on 3-angled pedicels, the angles hispidulous ; first 



cale minute, triangular, glabrous, the second scale about one-half 

 as long as the spikelet, ovate-lanceolate, 3-nerved, the margins 

 and internerves pubescent with appressed hairs, the third scale 



bout as long as the flowering scale, 7-nerved, the outermost lat- 



