188 



lOACEAE 



7. Eragrostis eragrostis (L.) Karst. 



Low Eragrostis. 



Fig-. 427. 



Poa eragrostis L. Sp. PI. 68. 1753. 

 Eragrostis poacoidcs Beauv. Ess. Agrost. 162. 1812. 

 Eragrostis minor Host, Fl. Austr. 1: 135. 1827. 

 Eragrostis eragrostis Karst. Deutsch. Fl. 389. 1880. 



Annual ; culms tufted, mostly less than 30 cm. 

 tall, glabrous ; sheaths smooth, somewhat pilose at 

 the throat ; blades 2-6 cm. long, 1 mm. wide, thin, 

 the margins and the sheaths beset with glandular de- 

 pressions ; panicles 5-10 cm. long, the branches 

 spreading; spikelets 8-15-flowered, 6-10 mm. long, 

 2 mm. wide; lemmas about 1.5 mm. long. 



In waste places, introduced from Europe, infrequent in 

 pastt-rii I'liited States, rare in California (Clinton, Amador 

 County, Hansen). October. Type locality, European. 



8. Eragrostis lutescens Scriljn. 



A^iscid Eragrostis. 



Fig. 428. 



Eragrostis lutescens Scribn. U. S. Dept. Agr. Div. Agrost. Circ. 9 : 7. 1899. 



Annual ; culms slender, glabrous, cespitose, 10-20 cm. tall 

 or often depauperate ; blades flat, narrow, pale green or yel- 

 lowish, 2-5 cm. long, 2-3 mm. wide; panicles narrow, rather 

 densely flowered, 4-7 cm. long, the branches appressed ; 

 spikelets narrowly oblong, 2-4 mm. long, 1.5 mm. wide, about 

 8-12-flowered; glumes unequal, the first 1 mm. long, the sec- 

 ond a little longer; lemmas obtuse, 2 mm. long, distinctly 

 nerved ; blades, sheaths, and main panicle branches beset with 

 glandular depressions. 



Sandy soil, Idaiio to Washington (Almota) and Oregon (The Dalles). 

 Type locality". Almota, Washington. 



A specimen collected at Jamacha by Canby in 1894 was referred in 

 the Flora of California (Jepson, Fl. Calif. 1 : •142. 1912) to Eragrostis 

 lugens Nees, Agrost. Bras. 505. 1829. It is a perennial, 50 cm. tall, 

 with a loose spreading panicle of long-pedicelled linear spikelets, the 

 branches pilose in the axils. It may be the same as forms that have 

 been referred to E. lugcns but, having glabrous blades, cannot be that species as described by Nees. 



Eragrostis cyperoides (Thunb.) Beauv., a South African species with spikelets in lateral fascicles on 

 stout axis, has been found on ballast at Linnton, Oregon (Nelson). 



the 



56. ANTHOCHLOA Nees; 



.Spikelets few-flowered, subsessile on 



culating above the glumes and between the 



thin-membranaceous, flabelliform, petal-lik 



hyaline. Low annuals or perennials with 



Species 3, 2 in the Andes, 1 in California. Ty 



Meyen, Reise um Erde 2: 14. 1835. 



a simple axis and imbricate, the rachilla disarti- 

 florets; glumes (in our species) wanting; lemmas 



e, many-nerved ; palea narrower than the lemma, 

 close spikes. [Greek, flower-grass.] 



pe species, Anthochloa lepidtila Nees. 



1. Anthochloa colusana (Davy) Scribn. 

 Colusa Grass. Fig. 429. 



Stapfia colifsana Davy, Erythea 6: 110. fl. 3. 1898. 

 Neostapfta eohisana Daw, Erythea 7: 43. 1899. 

 Paryetla Hack. Oesterr. 'Bot. Zeitschr. 49: 133. 1899. 

 .'Inthochloa colnsana Scribn. U. S. Dept. Agr. Div. 

 Agrost. Bull. 17: 221. /. 517. 1899. 



Annual ; culms ascending from a decumbent 

 liase, 7-30 cm. long; leaves overlapping, pale 

 green, scarious between the nerves, loosely folded 

 around the culm but not differentiated into 

 sheath and blade, about 12 mm. wide at the 

 middle, tapering to each end, 5-10 cm. long, 

 keeled on the back above, plicate, minutely ciliate, 

 with raised glands on the margins and nerves ; 

 panicles pale green, cylindric, at first partially in- 

 cluded, never much exserted, 3-7 cm. long, 8-12 

 mm. wide, the upper portion of the axis bearing, 

 instead of spikelets, lanceolate-linear empty bracts 

 8 mm. long ; spikelets subsessile, usually 5-flower- 

 ed, 6-7 mm. long, imbricate; glumes wanting; 

 lemmas flabellate, very broad, many-nerved, 5 

 mm. long, ciliolate-fringed. 



Only known from the type collection, "near Princeton, 

 Colusa County, California, bordering rain-pools on the 

 hard uncultivated alkali 'goose-lands,' beside the stage 

 road to Norman" (Davy). 



