270 MONOCOTYLODENOUS. 



brous. Panicle contracted, slender. Glumes 2-flowered, membranous, near* 

 ly equal. 



% April— June. Car. &, Ga. 



37 P Debile. Stem slender, decumbent, branching glabrous. Leaves 

 long, serrulate. Siheaths ciliate, hairy at the throat. Glumes lanceolate, gla- 

 brous. Flowers in slender diffuse panicles. Pedicels 2-fiowered. 



% August— Oct. Damp soils. 2-4 ft. 



38 P Angustifolium. Stem slender, glabrous. Leaves linear lanceolate, 

 ciliate at the base, scabrous above, glabrous beneaih. Flowers solitary, pu- 

 bescent. 



'H- May— June. Shaded soils. 1-3 ft. 



39 P DiVERGENS. Stem assurgent, slender. Leaves subulate, glabrous on 

 the under surface, scabrous above. Sheaths scabrous, longer than the joints. 

 Flowers solidary, on long peduncles. Glumes 1-flowered, with a subulate ac- 

 cessory glume. Pulecb shorter than the glumes. 



% June — August- Dry soils. 12-15 in. 



Genus VIII DIGITARIA. 



Liflorescence digitate, or fascicled ; spikelets in pairs, on 

 short bitid peduncles, arranged on one side of the rachis. 

 Glumes S, the lower one very minute, the lower floret sterile, 

 the upper perfect. Palecs of the perfect floret sub-coriaceous. 



1 D Sanguinalis. Stem decumbent, and assurgent, geniculate, taking 

 root at the joints. Leaves hairy with sheaths shorter than the joints, hairy, 

 somedmes purple. iSpikes digitate, spreading, 4-6. Glumes glabrous, exteri- 

 or ones small. Pulece with the valves equal, lanceolate. Crab grass. 



© Through the Summer. Cultivated grounds very common. 



2 D ViLLOSA. Stem columnar, hairy at the joints, geniculate, forming 

 dense tufts. Leaves Hntar-lanceolate, villous, t hea th s \i\[ous', spikelets 3- 

 flowered. Glumes pubescent, the exterior one very small. 



<v) June — Aug. Wet places, common. 



3 D FiLiFORMis. Stem erect, glabrous. Leaves narrow-lanceolate, slight- 

 ly scabrous, and hairy on the upper surface, isheath hairy. Spikes alternate, 

 filiform, sometimes very long. Glumes pubescent, nearly equal 



%- Sept.— Oct. On poor lands. 1-2 it. 



4 D Paspaloides. Milium Paspaloides of Ell. Stem ascending and de- 

 cumbent, compressed glabrous. Leaves ciliate, glabrous, 3-6 inches long. 

 Spi/ies digitate, conjugate. Ghimes glabrous, ovate-lanceolate, acute- Palece 

 equal, shorter than the glumes. Seed ovate, compressed. 



% June— Sept. Low country. 1-2 ft. 



Genus IX PA SP ALUM. 



Glumes 2, 1-flowered, membranaceous, equal. Palece 2, 

 equal. Seeds coated with the paieae. Flowers in spikes ar- 

 ranged on one side of the rachis. 



P P Setaceum. Stern erect, slender, glabrous. Leaves villous, narrow 

 Sheath villous. Spikes usually solitary. Flowers in two rows. Peduncle long 

 Glume equal, 3-5 nerved, minutely pubescent. 

 % June— Aug. Dry soils, common. 

 2 P CiLiATiFOLiuM. Stem decumbent, compressed, glabrous. Leaves broad 

 hairy, and cihate. Sheaths hairy. Spikes 2-3, indistinctly 3-rowed. Glumes 

 3-nerved, minutely pubescent. 



% Sandy fields. July— Oct. 12-18 in. 



