FLORA OF THE STATE OF WASHINGTON, 351 
PIPER 
Commonly 20 to 30 (rarely 40) cm. high; flowers somewhat 
larger; keel 9 to 11 mm. long. 
Pods 15 mm. long; flowers subsessile -.......-.-.....-.--- 8. L. lepidus.. 
Pods 20 to 25 mm. long; pedicels about 3 mm. long. 
Keel ciliate... ....2..2-2-.-2--2--.------------- lee eee 9. L. piperi. 
9a. L. piperi imberbis. 
Stems leafy. 
Plants dwarf, scarcely 20 cm. high, somewhat cespitose; pedicels 
slender, in anthesis 4 to 8mm. long__.........-..---.-.-- 10. L. subsericeus. 
Plants not dwarf. 
Decumbent or procumbent; maritime species .............. 18. LZ. littoralis. 
Erect, tall, 4 to 12 em. high, not maritime. 
Keel narrow, bent almost at right angles, early exposed 
for much of its length; pubescence of stem and leaves 
inclining to velvety rather than silky .............-.- 11. L. albicaulis. 
Keel broader, only moderately falcate, the tip only ex- 
serted. 
Flowers subsessile in dense spiciform racemes. 
Stout: silky pubescence somewhat coarse, shaggy 
and inclining to spread. 
Bracts scarcely exceeding the buds ....-.-..0 02... 12. L. leucophyllus. 
Bracts linear-filiform, plumose, much longer than 
the buds. .......2..---- toll eee ee ee eee l2a. L. leucophyllus plu- 
mosus. 
Slender; silky pubescence very fine and closely ap- 
pressed. 
Leaflets oblanceolate, acute or acuminate .....-..- 13. L. canescens. 
Leaflets elliptic-oblanceolate, rounded and mucro- 
nate at the apex. ........2-2-2-.-2----------- 13a. L. canescens am- 
blyophyllus. 
Pedicels well developed; racemes relatives loose, 
Standard glabrous ..........-.-.-.-.-.--------+--- 14. L. suksdorfit. 
Standard more or less pubescent dorsally. 
Pubescence of the stem loose and spreading. .. .- -- - 15. L. sericeus. 
Pubescence of the stem appressed. 
Stem stout, usually solitary, branching freely; 
caudex not much thickened. 
Bracts scarcely or not at all surpassing the 
larger buds... 2. --..-.-.---------------- 16. L. ornatus. 
Bracts much exceeding the larger buds... ..._ . 16a. L. ornatus bractea- 
tus. 
Stems several, slender, subsimple from a thick- 
ish caudex _......-.-- 2-2-2. 222-022-222 eee 17. L. alpicola. 
§ 3. Saxost.—Perennials; leaflets green on both surfaces, glab- 
rous or villous above, villous beneath; hairs long and loose, 
not so numerous or closely appressed as to give asilky luster; 
calyx subsymmetrical at the base; corolla blue or purple vary- 
ing to white. 
Dwarf, 20 to 30 cm. high; keel distinctly ciliate. 
Flowers small, few, in loose racemes; petals less than 1 cm.long. 19. L. volcanicus. 
Flowers larger, numerous, in a rather dense raceme; petals 1.5 
em. long ...-...---------------- 22-222 eee eee ee 20. L. saxosus. 
