FLORA OF THE STATE OF WASHINGTON. 141 
PIPER 
PUCCINELLIA. 
Panicle narrow, its base usually inclosed in the upper sheath, erect or the 
short lower branches sometimes divergent ........------------------ 1. P. angustata. 
Panicle well exserted, the branches becoming divaricate or reflexed._.._.-- - 2. P. distans. 
1. Puccinellia angustata (R. Br.) Nash, Bull. Torr. Club 22: 512, 1895, 
Poa angustata R. Br. App. Parry’s Voyage 287. 1824. 
Glyceria pumila Vasey, Bull. Torr. Club 15: 48, 1888. 
Poa nutkaensis Presi, Rel. Haenk. 1: 272. 1830. 
Type Locatiry: Melville Island. 
RANGE: Seacoasts, arctic regions south to Oregon and Maine. 
SPECIMENS EXAMINED: Whatcom County, Suksdorf 1027. 
2. Puccinellia distans (L.) Parl. Fl. Ital. 1: 367. 1848. 
Poa distans L. Mant. 1: 32. 1767. 
Type Locauiry: ‘Habitat in Austria.” 
RANGE: Seacoasts; subarctic regions south to Oregon and New Jersey. Europe. 
SPECIMENS EXAMINED: Yakima City, Piper 2590; Wenas, Griffiths & Colton 102, 73; 
Seattle, Piper 1451; Clallam County, Elmer 1910. 
None of the above specimens are typical P. distans, but in the present confusion of the 
genus they are tentatively so referred. 
BROMUS. Brome Grass. 
Spikelets strongly flattened. 
Awns less than 7 mm. long. 
Leaves linear, somewhat involute, pilose.......-.-.-.------ 1. B. subvelutinus 
Leaves linear-lanceolate, flat, not pilose. .......----------- 2. B. marginatus. 
Awns more than 7 mm. long. 
Panicle very broad, the longest rays 15 to 25 cm. long, droop- 
Ing... 2-2 ee ee ee ee eee ee eee 3. B. sitchensis. 
Panicle large but the rays not drooping. ......------------ 4. B. carinatus. 
Spikelets subterete, not strongly flattened. 
Native perennials mostly with loose and drooping panicles; lemma 
usually more or less long-hairy. 
Rays of the panicle not drooping. 
Panicle branches spreading, stiff; lemma scabrous or 
short-pubescent over the back...........-.-.------- 5. B. orcuttianus. 
Panicle short and erect; lemma pubescent on the sides.. 6. B. suksdorfii. 
Rays of the panicle drooping. 
Plant with rootstocks........-...-.----------------- 7. B. laevipes. 
Plants without rootstocks. 
Lemma evenly pubescent. 
Panicle large, heavy; culms stout... 2.2... --- 8. B. pacificus. 
? d 
Panicle small; culms slender... ..-.--------- 9. B. eximius. 
Lemma unevenly pubescent ......--------------- 10. B. richardsoni. 
Introduced annuals or biennials. 
Awns much longer than the body of the narrow lemma. 
tnd “ 
Lemma pubescent; awns 13 to 15 mm. long. ..--.----- 14. B. tectorum. 
Lemma not pubescent. 
Awns 35 to 45 mm. long...........------------- 11. B. maximus. 
ne 
Awns less than 30 mm. long. 
Panicle a dense head-like cluster. .......-.--- 12. B. rubens. 
Panicle loose.......-.-------- ee eee eee ee eee 13. B. sterilis. 
