Poa 



GRAMINEAE 



Brachypodium 



Key to the Species 



a. Glumes and lemmas rather firm or chartaceous; 1st glume 1-3- 

 nerved: If. blades often involute or plicate. 

 Culms and sheaths compressed-keeled: lemmas glabrous or sparsely 



cobwebby at the base 1 . P- compressa 



Culms and sheaths terete: lemmas copiously cobwebby at the base. 

 Panicle brs. spikelet-bearing from near the base: spikelets 



2-7-fld., 4-7 mm. long 2. P. sphondylodes 



Panicle brs. naked in the lower half: spikelets 2-4-fld., 3-5 mm. 



long 3 - P- faberi 



aa. Glumes and lemmas thin; 1st glume 1-nerved: If. blades usually flat. 

 Lemmas obtuse, broadly scarious above: panicle brs. smooth or 



nearly so; annual 4. P. annua 



Lemmas acute or obtusish, narrowly scarious above: panicle brs. 

 scaberulous. 



Spikelets 4-6-fld., 5-7 mm. long 5. P. mariesii 



Spikelets 2-4 fid., 2-4 mm. long 6. P. acroleuca 



1. Poa compressa Linn. Canada Bluegrass (Hitch.106). Culms 30-60 cm. high. 

 Eurasia; locally in Ki. Shady and moist places. 



2. Poa sphondylodes Trin. (Mak.F.864). Culms 20-80 cm. high; fls. IV-V; fr. VI. 

 Eastern Asia; locally in An., Che., Ku. Moist ground. 



3. Poa faberi Rendle (F.H.E.3:423). Culms 45-70 cm. high; fls. V; fr. VI. Tempe- 

 rate China; locally in Ku. Moist open places. 



4. Poa annua Linn. Low Speargrass f-l&Tfc (Tsao Shu Ho; Early-maturing Grass) 

 (Hitch.106). Culms 10-30 cm. high; fls. and fr. III-X. plant annual. Temperate 

 regions; locally in Che., Ku. Meadows or moist ground. 



5. Poa mariesii Rendle (F.H.E.3:425). Culms about 60cm. high. Central China; 

 locally in Ku. Moist places. 



6. Poa acroleuca Steud. (Mak.F.864). Culms 30-60 cm. high; fls. IV; fr. V. Eastern 

 Asia; locally in Che., Ki., Ku. Moist or shaded ground. 



16. Festuca Linn. Fescue M^K (Hu Mao Shu; Fox-grass Genus) 

 Perennials or rarely annuals of various habit: spikelets in panicles: lemmas awned 

 from the tip or awnless, 5-nerved; the nerves often obscure. About 100 species in 

 temperate and cool regions; 12 in China. (An ancient Latin name for a grass.) 



Key to the Species 



Perennial : stamens 3 : awns capillary, 3-9 mm. long 1 . F. parvigluma 



Annual : stamen 1 : awns slender, up to 18 mm. long 2. F. myuros 



1. Festuca parvigluma Steud. (AMBL-B 2:282). Culms 30-60 cm. high; fls. IV; fr. 

 V. Eastern Asia; locally in Che., Ku. Open or damp shady places. Fig. 409. 



2. Festuca myuros Linn. (Hitch.63). Culms 30-40 cm. high; fls. V; fr. VII. Europe, 

 Africa, North America, eastern Asia; locally in Ki. Mountainous roadsides. 



17. Brachypodium Beauv. feJCTM (Tuan Ping Ts'ao Shu) 

 Tufted perennials: spikelets subsessile, in a single terminal spike-like raceme: 

 lemmas 5-11-nerved, acuminate, with a terminal straight awn or mucro. About 10 

 species, in temperate regions and tropical mountains of the Old World; 5 in China. 



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