248 COMPOSITE. GaiNDELiA. 



boselv branched ; leaves oblono; or oblong-lanceolate, obtuse, slightly or finely 

 serrate (seklom spinulose-tooihetl), somewhat clasping; scales of the gluti- 

 nous involucre with recurved-squarrose or mostly circinale subulate lips; 

 bristles of the pappus 2-4. — Dunal, I. c. p. 50 ; Richards, aj^px. Frankl. 

 journ. ed. 2. p. 33 ; Torr. ! in ami. lye. Neiv York, 2. p. 212 ; DC. ! I. c. 

 Donia squarrosa, Pursh, fl. 2. p. 559 ; Bot. mag. t. ]706 ; Nutt. ! gen. 2. p. 

 163 ; Hook.! fl. Bor.-Am. 2. p. 25. Aurelia amplexicaulis, Cass., ex DC. 

 Dry plains, from the Upper Missouri ! to the Rocky Mountains ! and north 

 to Saskatchawan ! extending, according to Richardson, into the woody coun- 

 try between lat. 54° & 64°. July-Oct.— Plants 10-20 inches high. Leaves 

 of a pale glaucous hue, small. Heads numerous, small ; the involucre not 

 exceeding half an inch in diameter in the wild plant. 



6. G. lanceolala (Nutt.) : herbaceous, glabrous ; stem fastigiately and vir- 

 gately branched ; leaves lanceolate, acute, closely sessile, coarsely spinulose- 

 serrate or incisely toothed ; scales of the involucre with subulate-filiform . 

 straight appendages, nearly equal in length ; the exterior loose ; pappus 

 mostly of 2 bristles. — Nutt..' in jour. acad. Philad. l.p. 73. 



/3. leaves linear, sparsely spinulose-serrulate, or the upper entire. 



y.l leaves short, oblong-lanceolate, partly clasping, spinulose-serrulate ; 

 scales of the involucre with shorter appendages, more unequal and appressed. 



Plains of Western Arkansas I Louisiana! and Texas! (a. & /3. Nultall! 

 Dr. Pitcher! Dr. Leavenworth! Drummond!) y.l Texas, Drummond ! 

 Sept. — Plant 1-3 feet high ; with larger heads than the preceding, very glu- 

 tinous; the elongated aijpendages of the involucral scales not recurved and 

 circinate, but straight, spreading, or reflexed when old. Leaves ])ale, rigid; 

 the lower incisely spinulose-serrate, or sometimes almost pinnatifid, 2-3 

 inches long. We have only seen an imperfect specimen of the doubtful var. y. 



7. G.integrifolia (DC.) : stem herbaceous, wdth a few scattered hairs to- 

 wards the summit ; leaves puberulent or nearly glabrous, entire, with sca- 

 brous margins ; the upper ones lanceolate, acute, broadest at the partly clasp- 

 ing base ; "the lower somewhat spatulate-oblong, rather obtuse, often slightly 

 serrate ; scales of the glutinous involucre produced into slender subulate-fili- 

 form spreading appendages; bristles of the pappus mostly 2. — DC! 2nodr. 

 5. p. 315. Donia glulinosa, Hook.! fl. Bor.-Am. 2. p. 25, (excl. syn.) 



/3. virgata : steni more slender and virgately branched ; leaves narrowly 

 lanceolate ; heads smaller. — G. virgata, Nutt. ! in trans. Amer. phil. soc. I. c. 



Oregon, common. Dr. Scolder ! Douglas ! Nuttall /— (2) Stem 3-4 feet high ; 

 the branches and upper leaves as well as the involucre and corolla, &c., more 

 or less glutinous. The leaves rather thin. Heads about as large as in G. 

 squarrosa, or in var. a. larger; the exterior scales with long filiform appendages. 



8. G. stricta (DC.) : stem herbaceous, strict, somewhat simple, glabrous 

 at the base, sparingly hairy at the summit; cauline leaves much attenuate 

 and entire at the base ; the summit oblong, acuminate, serrate ; scales of the 

 involucre erect, linear, acuminate. DC. prodr. {maniiss.) l.p.21S. 



Port Mulgrave, on the North West Coast, Heenke, fide De Candolle. — 

 This species" is unknown to us ; and there is so much confusion and uncer- 

 tainty respecting the origin of the specimens in Htenke's collection, that we 

 cannot be confident as to the habitat. The character nearly accords with G. 

 humilis, except the somewdiat hairy stem and erect scales of the involucre. 



9. G. humilis (Hook. & Arn.) : diffiisely branched from the base, dwarf, 

 herbaceous, glabrous ; the stems mostly simple ; leaves resinous-dotted, linear- 

 spalulate or oblanceolate ; the radical and lower cauline with a long at- 

 tenuate base, the uppermost reduced to bracts ; heads small ; scales of the 

 involucre with subulate squarrose-recurved appendages. — Hook. Sf Arn. 

 hot. Beechey, p. 147. 



