156 COMPOSITiE. Aster. 



the same. We have a fragment collected by Eschscholtz which accords 

 with Pursh's character. 



109. A.Joliaceus (Lindl.) : stem simple ? racemose ; leaves oblong-lan- 

 ceolate, clasping, somewhat serrate, glabrous ; heads terminating the axillary 

 branchlets ; scales of the involucre spreading, foliaceous, glabrous. Lindl. 

 in DC. prodr. 5. p. 228. A. peregrinus. Less, in Linntza, I. c. ? ex DC. 



Unalaschka, Fischer. — Species remarkable for the scales of the involucre, 

 which resemble the rameal leaves : peduncle tomentose. DC. — De Can- 

 doUe also remarks that in his own specimen, likewise received from Fischer, 

 the scales of the involucre are erect instead of spreading, ciliate instead of 

 entirely glabrous; the leaves obtuse at the base; the stems slightly hairy, 

 with the hairs here and there somewhat in lines. 



110. A. graminifolius (PuTsh): slightly pubescent with minute scattered _ 

 hairs ; leaves very numerous, narrowly linear ; stems slender, branched at 

 the summit ; the branches somewhat corymbose, simple, prolonged into 

 slender naked peduncles terminated by single (small) heads ; scales of the 

 involucre linear-subulate, loose, scarcely in a double series, nearly the length 

 of the disk ; achenia minutely hairy. — Pursh, Ji. 2. p. 545 ; Richards. ! 

 appx. Frankl. journ. ed. 2. p. 32 ; Lindl. ! in DC. prodr. 5. p. 227. Gala- 

 tella graminifolia. Hook. ! Ji. Bor.-Am. 2. p. 15. Erigeron hyssopifolium, 

 Michx. ! ji. 2. p. 123. 



Hudson's Bay, Michauxl Sf Hcrh. Banks, to Slave Lake, Richardson! — 

 Stem 6-12 inches high, clothed like the leaves with minute and often sparse 

 somewhat strigose hairs ; the simple branches leafy like the stem below ; the 

 upper portion, or peduncle, leafless or nearly so, 2-3 inches long. Leaves 

 an inch or more in length, acute or mucronulate, with a conspicuous midrib, 

 and the broader ones presenting lateral veinlets or ramified nerves. Heads 

 about a third of an inch in diameter; the involucre resembling an Erigeron. 

 Rays 15-25, fertile, purple or rose-color, much longer than the disk. Ap- 

 pendages of the style very short, triangular. Achenia narrow, compressed, 

 scabrous-hirsute under a lens. — This plant bears no small resemblance to 

 Aster roseus, Stcv. (Calimeris rosea, DC.) ; which, however, has larger heads, 

 broader and more unequal and imbricated scales of the involucre, silky- 

 villous achenia, &c. 



§ 5. Scales of the regularly imbricated involucre with membranaceous or 

 scarious margins, destitute of herbaceous tips or appendages, often carinate, 

 mostly unequal: appendages of the style lanceolate, sometimes oblong or 

 triangular : receptacle alveolate {flat) : bristles of the pappus capillary, 

 usually unequal. — Orthomeris. (Calimeris, Nees, Lindl., DC, in part; 

 not of Cass. Species of Heleastrum, DC. Eucephalus, Xylorhiza, & Gala- 

 tella § Cahanihus, Nutt.) 



The original Calimeris (Kalimeris platycephala, Cass., or C. incisa, Z>C.) is dis- 

 tinguished by its conical receptadc, which is obscurely alveolate, its broad aiid jlat 

 margined achenia, and a pappus of short setaceous-sulfulatc bristles, none of which 

 exceed in length tlie proper tube of the (disk) corolla. C. integrifolia, Thircz. ! pre- 

 sents the same characters ; but, having naiTOW entire leaves, it accords in habit 

 with C. Altaica and C. canescens, Nces, C. Tartarica, C. exilis, &c. of Lindley, 

 and C. rosea, DC. But all the latter have a flat, or at most slightly convex, recep- 

 tacle, narrower achenia without distinct margins, and a capillaiy pappus which is 

 never much shorter than the corolla. Tliese, in connexion with tlie Xylorhiza and 

 a part of Eucephalus of Nuttall, the Aster nemoralis, Ait., &CQ. appear to fonm a 

 pretty well defined subgenus, or genus, more nearly allied to Galatella (as that 

 genus now stands) than to Calimeris, but hardly to be separated from Aster by 

 those who would retain Tripolium as a subgenus ; and A. acuminatus, Michx., with 



