Aster. COMPOSITE. 155 



ami slender, sending up small clusters of decumbent stems, 3-4 inches high. 

 Leaves scarcely an inch long, rather coriaceous. Head about half as large 

 as in A. alpinus. 



106. A. glacialis (Nutt.): rhizoma thickish, not creeping; stem low, erect, 

 minutely pubescent above, often nearly leafless, bearing a single head ; leaves 

 spatulate-oblong and lanceolate, entire, glabrous, obscurely 3-nerved; the 

 cauline small, acute, partly clasping ; scales of the involucre numerous, 

 linear-subulate, glandular-puberulent, appressed, about the length of the disk. 

 —Nutt.! I. c. p. 291. 



Rocky Mountains, with the preceding. Nutiall! — Stems about 3 inches 

 high, bearing 2—3 small leaves, and a head about the size of the preceding, 

 but with broader and shorter rays. Radical leaves 1-2 inches long, thickish, 

 with somewhat scabrous margins. Pappus strongly scabrous. Involucre 

 much like that of A. salsuginosus, brownish, somewhat viscid. 



107. A. salsuginosus (Richards.) : stem simple, leafy, bearing 1 to 3 

 heads, pubescent above with appressed hairs ; leaves linear-obovate and lan- 

 ceolate, apiculate-acuminate, mostly entire, veiny, somewhat pubescent; the 

 radical and lower cauline tapering into a margined petiole, the upper sessile 

 and partly clasping ; scales of the involucre narrowly linear or linear-subu- 

 late, jjubescent, nearly equal, lax, with mostly squarrose-spreading or re- 

 curved tips ; achenla somewhat hairy. — Richards, in appx. Frankl. journ. 

 p. 749, &f ed. 2. p. 32 ; Spreng. syst. 3. p. 527 ; Nees, Ast. p. 29 ; Hook. 8^- 

 Am. hot. Beechey, p. 126 ; DC. prodr. 5. p. 229. A. salsuginosus, (3. 

 Hook. ! Ji. Bor.-Am. 2. p. 6. A. tJnalaschkensis, Less, in Linncea, 6. p. 

 124 ,• Nees, Ast. p. 34 ; Bongard ! veg. Sitcha, I. c. p. 148 ; DC. ! prodr. 

 5. p. 228. 



/3. stem stouter and larger, often bearing 3-5 heads ; lower and radical 

 leaves broadly spatulate or obovate ; the upper oblong-ovate or ovate-lanceo- 

 late ; scales of the involucre somewhat glandular. — A. salsuginosus (a.) 

 Hook. ! hot. mag. t. 2942, S; Ji. Bor.-Am. 2. p. 6 ; Hook. 4' Am. hot. 

 Beechey, suppl. p. 350. 



Subarctic America, from the salt plains of the Athabasca, Richardson ! 

 and the Rocky Mountains, J) /■?<m?«o«f^/ to Kotzebue's Sound ! the N.W. 

 Coast! Unalaschka ! Sitcha, and the interior of California (Oregon?), 

 Douglas! — Plant 6 to 18 inches high, with a thickish rhizoma, and large 

 heads (the peduncles thickened at the summit) ; the rays 30 or more, 6 to 8, 

 or even 10 lines long, purple? Radical and lower leaves 3-5 inches long, 

 including the margined petiole, varying from 3 lines to an inch in width, 

 nearly glabrous when old. Pappus densely scabrous. — In all the specimens 

 we have examined, the scales of ihe involucre are in fact nearly the length 

 of the disk, although their recurved summits cause them to appear much 

 shorter. In the A. Unalaschkensis, the involucre is more pubescent or hairy, 

 and scarcely glandular or viscid, and less recurved. The specimens from 

 the North West Coast, collected by Mr. Menzies, are intermediate in this 

 respect. 



108. A. peregrinus (Pursh) : stem somewhat simple, erect, glabrous, hir 

 8Ute above, bearing 1-3 heads at the summit ; leaves sessile, remote, 

 oblong-lanceolate, gradually acute, glabrous; scales of the involucre lan- 

 ceolate-Hnear, very acute, villous, loose, as long as the disk ; rays numerous 

 (heads large, violet). Pursh, fl. 2. p. 556 ; DC. prodr. 5. p. 228. "A. 

 Tilesii, Wikstr. in act. Holm. 1822. p. 13," fide Nees S^- DC. 



North West Coast; Unalaschka, D. Nelson, Pursh. (Norfolk Sound, 

 Eschschollz !) — We copy the character from Pursh, since Chamisso's plant 

 from Unalaschka. which Lessing has described under this name, De Candolle 

 inclines to refer to A. foliaceus, Lindl. ; the description of Nees is drawn 

 from Chamisso's plant; while that of Bongard from Sitcha is supposed to be 



