Eragrostis GRAMINEAE Lophatherum 



panicles: lemmas awnless, compressed, usually glabrous, 3-nerved or the lateral nerves 

 obscure; callus glabrous. Over 100 species, in tropical and temperate regions; more 

 than 20 in China. (Greek; eros, love, and agrostis, a grass.) 



Key to the Species 



a. Rachilla joints freely disarticulating, each with a floret; lemmas fall- 

 ing from above downwards 7. E. amabilis 



aa. Rachilla joints continuous or tardily disarticulating; the lemmas fall- 

 ing from below upwards, 

 b. Plants perennial. 



Pedicels glandular in or above the middle 1. E. ferruginea 



Pedicels eglandular. 

 Spikelets tawny, green, or lead-colored; the lemmas rather 



firm, closely imbricate 2. E. elongata 



Spikelets purplish; the lemmas rather thin, loosely imbricate.. 3. E. terrestris 

 bb. Plants annual. 



c. Lf. margins glandular: lemmas also frequently glandular on 



the keel 6. E. cilianensis 



cc. Lf. margins and keels of lemmas eglandular. 



First glume 1-1.2 mm. long, 1-nerved; lateral nerves of the 



lemma distinct or prominent 4. E. autumnalis 



First glume 0.5-0.8 mm. long, often nerveless; lateral nerves 

 of the lemma frequently obscure. 



Panicle brs. long-pilose in the axils 5. E. pilosa 



Panicle brs. glabrous in the axils 5a. E. pilosa 



var. imberbis 



1. Eragrostis ferruginea (Thunb.) Beauv. ftl!^ (Chih Feng Ts'ao; Indicate-the- 

 wind Grass) (H.F. 7: 324). Culms 25-75 cm. high; fls. VIII; fr. IX. Eastern 

 Asia; locally in An., Che., Ki., Ku. Waste places. Fig. 407. 



2. Eragrostis elongata (Willd.) Jacq. (H.F. 7: 319). Culms 10-60 cm. high; fls. X; 

 fr. XI. Southeastern Asia to Australia; locally in Che., Ki. Dry or moist ground. 



3. Eragrostis terrestris Keng (Sc.C. 10: 182). Culms 30-60 cm. high; fls. IX; fr. 

 X. Southeastern China; locally in An., Ku. Open moist ground. 



4. Eragrostis autumnalis Keng (Sc.C. 10: 178). Culms 15-40 cm. high; fls. VIII; 

 fr. IX. Southern, eastern and northern China; locally in An., Ku. Open roadsides. 



5. Eragrostis pilosa (L.) Beauv. India Lovegrass (Hitch. 151). Culms 15-60 cm. 

 high; fls. and fr. VI-IX. Most warm countries; locally in Che., Ki., Ku. Waste 

 ground or meadows. 



5a. Eragrostis pilosa var. imberbis Franch. (NAMP 7: 145). Culms 10-30 cm. high; 

 fls. VIII; fr. IX. Southeastern Asia; locally in An., Ku. Moist ground. 



6. Eragrostis cilianensis (All.) Link ex Lutati Stinkgrass (Hitch. 155). Culms 15- 

 90 cm. high; fls. and fr. V-X. Southern Eurasia, Africa, America; locally in Ku. 

 Waste places. 



7. Eragrostis amabilis (L.) Wight & Arn. (E. tenella (L.) Beauv. ; E. japonica (Thunb.) 

 Trin.) (Hitch. 147; M.E. 1: 88). Culms 30-100 cm. high; fls. and fr. VIII-X. 



Asia, America, Australia and Africa; locally in An., Che., Ki., Ku. Moist or low 

 ground. 



12. Lophatherum Brongn. ItkYlMM (Tan Chu Yeh Shu) 

 Erect perennials with lanceolate or ovate cross-veined If. blades: spikelets subsessile, 



443 



