GEAMINBAB (GilASS FAMILY) 



131 



98. S. neglectus. 

 BpikeletB x 4. 



panicle exserted, 2-4 cm. long; spikelets 4 mm. long; the acuminate glumes 

 usually subequal, nearly as long as the acuminate scabrous minutely appressed- 

 pubesceiit lemma, which is exceeded by the sharp-pointed palea. — Sterile fields 

 and waste places, s. Me. to S. Dak., and southw. Sept. 



7. S. neglfictus Nash. Similar to the preceding, usually more slender ; the 

 panicles smaller, more completely inclosed; spikelets iJ.5-3 mm. long ; glumes, 

 lemma, and palea ail subequal, acute, thinner in texture, glabrous, white 

 and shining. — Sterile or sandy soil, N. B. to S. Dak., s. to Va. 



and Tex. Fig. 98. 



8. S. iNDious (L.) R. Br. (Smut Grass.) Tufted culms 

 3-10 dm. high,' erect, wiry ; leaves 10-30 cm. in length, long- 

 attenuate; panicle \-\ the entire height of the plant; spikelets 

 2 mm. long, shining, crowded on the slender erect branches ; 

 glumes obtuse, unequal, the second \ as long as the acuminate 

 lemma which is slightly longer than the obtuse palea. — Waste 

 ground and fields, Va. to Ark., and southw. Aug., Sept. — 

 Panicle frequently affected with a black fungus, hence the com- 

 mon name. (Nat. from trop. regions.) 



9. S. virglnicus (L.) Kunth. Glabrous; culms erect, 1.5-5 dm. high; 

 sheaths overlapping ; blades firm, involute, conspicuously distichous on the nu- 

 merous sterile shoots ; panicles exserted, 3-6 cm. long ; spikelets 3 mm. long; the 



glumes unequal, the second exceeding the glabrous floret. — 

 Sandy shores, Va. to Fla. Aug., Sept. (Trop. regions.) 



10. S. cryptindrus (Torr.) Gray. Tufted, 4-7 dm. high; 

 culms rather stout, erect or somewhat spreading ; sheaths over- 

 lapping, ciliate on the margin and conspicuously bearded at the 

 throat; blades 6-12 dm. long, 3-5 mm. wide, fiat, scabrous; 

 panicle lead-colored, usually open, 12-20 cm. long, included at 

 base in the upper sheath, or sometimes contracted and wholly 

 included ; spikelets 2-2.6 mm. long ; first glume about | as long 

 as the second; lemma acute, longer than the palea. — Sandy 

 soil, especially on the coast and about the Great Lakes, N. E. to 

 Minn., s. to Pa. and Tex. Aug., Sept. (Mex.) Fig. 99. 



11. S. jiinceus (Michx. ) Kunth. Tufted, glabrous, 4-7 dm. high; culms 

 wiry, erect, leafy at the base, naked above ; the involute-setaceous basal leaves 

 12-24 cm. long, spreading ; panicle purplish or chestnut, the short verlicillate 

 branches spreading ; spikelets 3 mm. long ; first glume about J the 

 length of the second, which is as long as the glabrous subacute 

 equal lemma and palea. {S. gracilis Merr. ; 8. ejuncidus Nash.) 

 — Dry sandy soil, Va. to Fla., w. to Tex. Aug. Fig. 100. 



12. S. heter61epis Gray. Tufted, 6-9 dm. high ; culms rather 

 stout, wiry, erect ; basal leaves about } as long as the culm, 

 involute-setaceous ; panicles long-exserted, 7-25 cm. long, branches 

 ascending ; spikelets 4-6 mm. long ; first glume about \-% the length of the 

 floret, the second acuminate, often cuspidate (varying in length in the same 



panicle), exceeding the glabrous obtuse or subacute equal 

 lemma and palea ; grain very large, pericarp shining, indu- 

 rated, splitting the palea. — Dry soil g,nd prairies, w. Que. to 

 Man., s. to Ct., Pa., Mo. and Tex. Aug., Sept. — Strong- 

 scented. Fig. 101. 



13. S. comprfissus (Torr.) Kuntli. Perennial from short 

 scaly rootstocks, fiattened at base; culms .'1-6 dm. high, leafy 

 to the top ; the sheaths overlapping ; leaves conduplicate ; 

 panicle |-J the length of the entire plant, loosely flowered ; 

 spikelets 2 mm. long; the acute glumes shorter than the striate scabrous lemma 

 which equals the palea. (S. Torreyanus Nash.) — Bogs in pine 

 barrens, L. I. and N. J. Sept. — Spikelets rarely 2-fl()wered. * 



14. S. uniflbrus (Muhl.) Scribn. & Merr. Rootstocks very ^ 



slender ; culms delicate, tufted, erect, 2-4 dm. high ; leaves 102. S. uniflorus. 

 1-2 mm. wide; panicle \-\ the length of the culm, loosely Spikeletxs, 



99. S. cryptandrus. 

 Open spikelet with 



glumes detached 



x4. 



100. S. .iunceiis. 

 Spikelet X 8. 



lot. S. heterolepis, 

 Spikelet x 3. 



