47 



HORDEUM ADSCENDENS H B K. 



"A rather slender, erect, leafy annual 

 <?) 2 to 3 feet high, with terminal bearded 

 spikes 3 to 4 inches long-. Culms teiete, 

 smooth, shining; nodes smooth, o. the 

 southern part of San Diego county, Gal., 

 lower oner, minutely puberulent; sheaths 

 shorter than the internodes, the lower 

 smooth, striate; ligule membranous, 

 ones densely pube cent. the upper 

 rounded, entire, about 1 line long; leaf 

 blades rather rigid, 3 to 6 inches long, 2 

 to ? lines wide, stiiate, scabrous, gradual- 

 ly nan owed to the pungently tipped apex. 

 Axis of the spike compressed, scabrous or 

 subciliate on the margins, the joints about 

 1 line Icng. Empty glumes setaceous, 

 rounded on the back, sulcate on the innof 

 face below, scabrous, those of the central 

 spikelet about 1 inch long, those of the 

 lateral spikelets a little shorter; flowering- 

 glume of the central spikelet 4 1 /fe to 5 lines 

 long, scabrous; palea about as long as the 

 glume, scabrous on the keel above. Pro- 

 longation of the rachilla awn-like, and 

 two-thirds as long as the palea. Lateral 

 spikelets neutral, the pedicellate third 

 glume about 3 to 3^ lines long, scabrous, 

 subulate-pointed. H B K., Nov. Gen. 1, 

 180. Distinguished from H. nodosum by 

 its taller habit of growth, attenuate and 

 pungently pointed leaves, longer spike- 

 lets and longer-awned glumes, the empty 

 ones being flattened or sulcate on the in- 

 ner face and not 'ere'e throughout. 

 Abundant along irrigation ditches near 

 Glendale, Ariz. No. 2522 C. R. Orcutt, 

 April 30, 1896." Scribner & Smith, b 4,- p 

 24, D-A agr (6 F 1897). 

 SPARTTNA GLABRA Muhl. 



A glabrous, erect, and often stout 

 salt-marsh grass 6-24 dm high with 

 long, flat, or involute leaves, few or 

 many erect, usually appressed spikes 

 and glabrous spikelets. Culms simple, 

 sometimes 2 cm in diameter below; 

 sheaths glabrous, the lower ones 

 crowded and imbricate, distichous; li- 

 gule a ciliate ring about 2 mm long; 

 leaf-blades 5-7 dm long, 1-1.5 cm wide, 

 usually flat but sometimes involute, 

 tapering to a long involute tip, gla- 

 brous throughout. Panicles 2-4 dm 

 long. Spikelets densely imbricate, 10-14 

 mm 1'ong; empty glumes glabrous, or 

 both sparingly scabrous on the keel, 

 the first 6-8 mm long, the second 10-14 

 mm in length; flowering glume 8-10 

 mm long. Palea somewhat exceeding 



the glume and thinner in texture. 

 Salt marshes along the coast from 

 Virginia to Florida and Texas. San 

 Diego, Cal. (Orcutt). 

 SPARTIN'A FOLIOSA Trin. 



A glabrous perennial with numerous, 

 rather short flat leaves, densely flow- 

 ered spikes and usually very strongly 



48 



aculeolate-ciliate keeled empty glumes. 

 Culms simple, about 1 cm in diameter 

 below. Sheaths crowded and overlap- 

 ping, especially above; ligule a ciliate 

 ring about 2 mm long; leaf-blades 2-6 

 dm long, about 1 cm wide, glabrous 

 throughout, plane or sometimes invo- 

 lute in drying, tapering into a slender 

 involute tip. Panicle 10-15 cm long, al- 

 most cylindrical, the spikes densely 

 flowered, 2-5 cm long, appressed, pri- 

 mary, and secondary ones glabrous. 

 Spikelets imbricate, 12-14 mm long, 

 glabrous throughout or the empty 

 glumes usually very strongly aculeo- 

 late-ciliate on the keels, the first nar- 

 row, 7-8 mm long, the second, 12-14 mm 

 in length; flowering glume nearly as 

 long as the second empty glume, 

 slightly shorter than palea, glabrous 

 throughout or sometimes ciliate on the 

 margins below. Salt marshes along 

 the coast, San Francisco, Cal., San 

 Diego, Cal. (Palmer). 



STIPA CALIFORNICA Merrill & Davy. 



"A rather stout erect caespitose gla- 

 brous perennial, 7-10 dm high, with plane 

 or involute Ivs and elongated contracted 

 panicles about 3 dm in length: culms and 

 Anodes glabrous; sheaths shorter than the 

 internodes. glabrous except on the some- 

 what ciliate margins above; ligule a mi- 

 nute lacerate ring 0.5 mm lorg, with a 

 prominent fringe of hairs on the appar- 

 ently auriculate margins, 1 5 mm long; 

 blades firm, plane or becoming involute 

 in drying. 2-4 mm wide. 1-1.5 dm long, gla- 

 brous beneath, striate and scabrous 

 above: panicles pale, interrupted, the 

 common axis glabrous, branches solitary 

 or in twos or threes at each node, ap- 

 pressed, fl-bearing throughout, the lower 

 ones sometimes 1 dm long: empty glumes 

 glabrous, hyaline. 3-nerved. about 11 mm 

 long, sub-equal, with a very slender acu-- 

 minate apex; fl'ng glumes about 5 mm 

 long, excluding the very acute pilose cal- 

 lus' which is 1 mm 'ong. lanceolate, spar- 

 ingly hairy throughout with appressed 

 stiff w hairs which increase in length to- 

 ward the apex of the glume: awn slen- 

 der. 2.5-3 cm long, geniculate. twisted and 

 sparingly pilose below the geniculation 

 with appressed or ascending hairs, sca- 

 bious above." Merrill & Davy. Univ Cal 

 pub bot 1:61. Jac (Hall 2556). 

 TTLLAEASTRFM AQFATICUM. 



Button, NY boft gard b 2:1. based on 

 Tdllaea aquatica I,. Sp PI 128 (1753) 



"TMHaieaa angusttlfoHia (Xutt. ! mss.): 

 "branching v from the base, rooting: Ivs 

 lir-eair. acute, connate; fls axiTary, nearly 

 solitary, on very short pedicels: seer- 

 p'.Tts of the calyx 4. ovate, about half 

 the length of the ovate obtuse pet; car- 

 tels broad, nbtus'e. many seerld. Muddy 

 banks of the Oregon and Wahlamet.. 

 Plant 1-2 inches high. Styles 0: stigma 



