354 



MISC. PUBLICATION 200, U. S. DEPT. OF AGRICULTURE 



loosely flowered, bronze purple, 10 to 

 15 cm. long, the branches very sca- 

 brous; glumes 4 mm. long; lemma 

 2.5 mm. long, bearing at the middle 

 a bent exserted awn; palea minute. 

 91 — Bogs and marshes at low alti- 

 tudes, Tillamook County, Oreg., to 

 Marin County, Calif. 



Agrostis longiligula var. aus- 

 tralis J. T. Howell. Ligule 4 to 11 

 mm. long; awn of lemma straight, 

 about 1 mm. long or obsolete. % 

 — Wet places, Marin, Sonoma, and 

 Mendocino Counties, Calif. 



Agrostis nebulosa Boiss. and Reut. 

 Cloudgrass. Culms slender, branching, 

 about 30 cm. tall; foliage scant; panicle deli- 

 cate, oblong, half as long as the plant, the 

 branches in verticils; spikelets 1 mm. long. 

 O (Sometimes called A. capillaris, not A. 

 capillaris L.) — Cultivated for dry bouquets. 

 Spain. 



72. PHIPPSIA (Triii.) R. Br. 



Spikelets 1-flowered, the rachilla 

 disarticulating above the glumes, not 

 prolonged; glumes unequal, minute, 

 the first sometimes wanting; lemma 

 thin, somewhat keeled, 3-nerved, ab- 

 ruptly acute; palea a little shorter 

 than the lemma, dentate. Dwarf, 

 tufted perennial, with narrow, few- 

 flowered panicles of small spikelets. 

 Type species, Phippsia algida. Named 

 for C. J. Phipps. 



1. Phippsia algida (Phipps) R. Br. 

 (Fig. 496.) Culms densely tufted, 2 

 to 10 cm. tall; blades soft, narrow, 



with boat-shaped tip; lemma about 

 1.5 mm. long. % — Summit of 

 Grays Peak, Colo.; Arctic regions of 

 both hemispheres. 



73. COLEANTHUS Seidel 



Spikelets 1-flowered; glumes want- 

 ing; lemma ovate, hyaline, terminat- 

 ing in a short awn; palea broad, 2- 

 toothed, the keels awn-tipped. Dwarf 

 annual, with short flat blades and 

 small panicles. Type species, Cole- 

 anthus subtilis. Name from Greek 

 koleos, sheath, and anthos, flower, 

 alluding to the sheaths enclosing the 

 base of the panicles. 



1. Coleanthus subtilis (Tratt.) 

 Seidel. (Fig. 497.) Culms spreading, 

 forming little mats, mostly less than 

 5 cm. long; panicle 5 to 10 mm. long, 

 the short branches verticillate; lem- 

 ma about 1 mm. long, the awn about 

 equaling the dark caryopsis. O — 

 Mud flats along the lower Columbia 

 River, Oregon and Washington, well 

 established but probably introduced; 

 northern Eurasia. 



Mibora minima (L.) Desv. Delicate 

 annual, 3 to 10 cm. tall with short 

 narrow blades and slender racemes 

 of 6 to 8 appressed purple spikelets, 

 2 mm. long, the glumes obtuse, the 

 lemma and palea shorter, pubescent. 

 O — Plymouth, Mass.; introduced 

 from Europe. 



\ 



4k 







Figure 496. — Phippsia algida. 

 Plant, X Yi\ glumes and floret, 

 X 10. (Oldmixon, Alaska.) 





