458 COMPOSITAE 
the upper more or less sessile ; leaves five to eleven times as long as wide (petiole included), those 
near or shortly below the middle yen —— 7-13 cm. long and 1-2 cm. wide, the upper and lower 
gradually reduced; basal leaves - ing; heads ale in a pear Pelee ibe'y. seelpeee re: 
rather b ight Zz llow at first later ¢ dull the disk well surpassing t volucre, about wide; 
involucre white ape ise m. m. high, composed of 10-17 (chiaine 13) so : Rawes 
15-29 abana: about 21) in ee head. 
Stee mtine slopes, Arid Transition Zone; Grant County, Oregon. Type locality: Fields Creek, 17 miles 
piiibeest of Dasville. Grant County. July. 
3. Luina hypoléuca Benth. Little-leaf Luina. Fig. 5799. 
Luina a Benth. in Hook. Ic. Pl. III. 2: 36. pl. 1139. 1876. 
Luina hypoleuca var. eae Gray, Proc. Amer. Acad. 9: 206. 1874. 
Luina eet AST Rydb. N. Amer. FI. 34: 316. 
Perennial from a stout, branched, woody caudex, which sometimes apparently surmounts a 
taproot ; stems se <atal or many, 1. _4'dm ta il, white- tomentose throughout, equably leafy. Leaves 
all (except the re ca ced lowermost ones) reasonably si milar in size and shape, sessile, more or less 
broadly elliptic or ovate, commonly cm. long he —35 mm. wide, entire or nearly so, white- 
tomentose on the lower surface, green and thinly to Gettelnie. or bright green and glabrous on 
the upper; basal leaves wanting; heads slender-pedunculate in a short, corymbiform or sub- 
a inflorescence, dull yellowish, smallish, the disk about 1 cm. wide or less, the a 
tomentose or coms te in side mein mostly 5-8 mm. hi gh, composed of ahoat 4 8-10 bracts, and co 
monly 10-17-flowered. 
Cliff crevices, i slopes, and similar rocky plac occasionally on serpentine, mostly Transition and 
Canadian Zones; commonly at 3,000 to 7,000 nc Uivation but siete te approaching sea big aa the — 
region and southward; southern British Columbia and Washington, from the Cascade Mountain stward, south- 
wafd less commonly in the Coast Ranges to Lake and Mendocino Counties, “Calif fornia. Type locality: ee ke 
Chilukweyuk, Cascade Mountains, Washingt nll Seme-Se ept. 
4, Luina stricta (Greene) Robinson. Tongue-leaf Luina. Fig. 5800. 
Prenanthes stricta Greene, Pittonia 2: 21. 1889. 
Luina pipert Robinson, ee Gaz. 16: 43. 1891. 
Pastas strictum Greene, gies 22228. 1892: 
Raintera stricta Greene, op. cit. 3: 291. 1898. 
Luina stricta Robinson, Proc. igre Acad. 49: 514. 1913. 
ibrous- als erennial from a short stout rhizone or branched caudex, mostly 5-10 d 
tall, essentially gla fsb except for the thinly tomentose-puberulent involuc and clinton. 
Basal and lower i 
1 rmost cauline leay a tent, broadly oblanceolate or broader, - 
monly 1 . lon aie ing the petioliform ba d 2- dle and upper 
cauline leaves progressively reduced an romeng sessile ; inflorescence 1-4 dm ong, thyrsoid- 
racemif its bracts seldom conspicuous; involucre narrow, its bracts mostly about 5-6, 7-9 
mm. Shc the midvein thickened ; howe? rs oe aypieally about 5. 
an t open slopes at high altitudes in the pe i ie Hudsonian Zone; common in hed vicinity 
of scoot Rainier, WW asktagton, southward _at scatt —— Hi tions in the Cancade Si susteiae to southern Lane 
County, Oregon. Type locality: Mount Rainier. July— 
115. ERECHTITES Raf. FI. Ludov. 65. 1817. 
Heads need dull yellow or whitish. Involucre a single series of narrow, equal, 
more or less herbaceous bracts, sometimes with a few minute bracteoles at the base. Recep- 
tacle flat, naked. sr r flowers pistillate, filiform-tubular, eligulate, in 2 to several series; 
inner flowers hermaphrodite but sometimes sterile. Corolla narrowly tubular, 4-5-toothed. 
eee of a 12 spec ies, native to America ih Aubixilana; only one species is native to North America 
north and none is native to our range. Type species, Senecio hieracifolius L.. 
Heads relatively large, gt involucre commonly 10-17 mm. high. 1. E. hieracifolia. 
Heads much smaller, the bettied saris 5-7 mm. hig’ 
pia more or less ae atifid. 2. E. arguta. 
Leaves finely and sharply ee not at all lobed or pinnatifid. 3. E. prenanthotdes. 
1. Erechtites a (L.) Raf. ex DC. Eastern Fireweed. Fig. 5801. 
Senecio hieracifolius L. Sp. Pl. 866. 17 
rnebaitis hieractfolia Raf. ex DC. Sa mA 294. 1837. 
nnual tall, glabrous or sometimes more or less — hairy through- 
out. Leaves numerous, wel aistribated along the stem, ae various sizes up to 20 cm. long and 8 in 
wide, sharply se mes also irregularly lo the lower ciowes “eh obova 
often more or ice portent the reid le and upper beconuibe sessile and often poner teed ar ; 
