A<»U«»STIIU:.K 



281 



than the internodos; ligiilc unite, 4 inin. lonp; hhidcs 8-15 cm. 

 long, 6 mill. wiiK'. Spike exscrtetl when iiiuture,5-H cm. long, 

 6-8 mm. wide, dense. Spikelcts ovail. uhout ',' mm. long; empty 

 glumes little united below, the keels and lateral glumes eiliate- 

 pul.p-oent, obtuse and truncate; floral glume nt-arly as long as the 

 empty ones, ovate, oblong, obtuse, smooth, edges unitcil to the 

 middle, awn startin;.' from the middle, little exceetling the glume. 



Calit'ornia, Lrtnninn in 1HT4. /'nffttn in IHS4. 



5H. (1','4). COLEAHTHUS Seid. K. & S. Syst. 2:270 (1817). 

 Srhiti'iffid Trait. Fl. Austr. 1: 1'2, t. 451 (1811). II/V/W^A/ Sternb. 

 in Fl. 'iA\ (181!)). 



Spikelets very small, with one perfect flower, pedicellate in um- 

 bellate clusters. Kiiipty glumes 0; floral glume hyaline, persistent. 

 ovate. keele<l. slmrt-awned; palea shorter, broader, persistent, 

 2-keeletl, d'viled or 3-4-toothed. Stamens 3. Styles distinct. 

 Grain narrowly oltlcmg, slightly <onii)res3ed, deciduous. I'anicle 

 partly exserted from the upper inllateil sheaths. Sihutiiltid Tratt. 

 is now applied to a very difTereut genus of grasses. There is oidy 

 one species known. 



1. C. subtilis Seid. 1. c. 



Culms slender, forming loose tufts in tlio 

 mud, geniculate, often branching below, only 

 2-7 v.\\\. high. Sheaths loose with margins 

 scabrous, the upper much inflated; ligule elon- 

 gated; blades smooth, curved, conduj)licato or 

 involute, 1-1. 5 cm. long. Panicle usually 3imj)le, 

 1-3 cm. long, bearing :]-.5 umbels; ))edicel8 

 scabrous, I-:.* mm. long. Floral glume iuinv)w, 

 1-nerved, longer than the ripened grain, which 

 is about 1 mm. long. 



It is very nearly allied to Phipjma and 

 Sporobolus ; but the lower glumes are wanting. 



Hohemia and Norway; also in Oregon Fig. 'tO. — Coleanthua 

 (Sauvie's Island), where it was discovered by (Uichardsou.r ^*'' 

 Thomas Ilowell. It may have escaped notice 

 in other places, owing to its small size. 



