66 COMPOSITjE. Carphephorus. 



on the description of Liatris Baicalensis of Adams, which is said to have a chaffy 

 receptacle, the genus has been thought to be Siberian ; although a third, and doubt- 

 less genuine species from Mexico, and subsequently a fourth from Brazil, are 

 also given by De Candolle. Cassini's original species is without doubt the Liatris 

 squamosa of Nuttall ; in which the chaffy receptacle (first pointed out to us by Dr. 

 Chapman) had escaped the notice both of Nuttall and Hooker. Cn examining the 

 allied species of Liatris, we find that all those with many-flowered heads disposed 

 in corymbose cymes also belong to the genus ; which is well marked in habit. 



* Leaves linear-subidaie, app-essed : heads cymose or racemose. 



1. C. Pseudo-Llatris (Cass. 1. c.) : stem virgate, simple, lomentose-pu- 

 bescent ; leaves linear-subulate, carinate, rigid, closely sessile, nearly glab- 

 rous, sparsely punctate; the radical ones elongated; the cauline short, very 

 numerous, closely appressed ; the uppermost pubescent; heads few (3-7), 

 in a simple contracted cyme ; the branches imbricated with very short subu- 

 late leaves; scales of the involucre ovate-lanceolate, rigid, appressed, to-, 

 mentose-pubescent ; achenia minutely hairy; pappus barbellate. — Liatris 

 squamosa, Nidt. ! in jour, acacl. Philad. 7. p. 73 ; Hook. ! com/pan. to hot. 

 mag. 1. p. 95. 



/?. heads (13-14) racemose. Hook. I. c. 



Dry soil, Alabama, Dr. Gates ! Middle Florida, Dr. Chajmian ! Also 

 Covington and .Jacksonville, Louisiana, Drmvmovd (with var. /3.), & Pasca- 

 goula, Mississi|)pi, Dr. Riddell! — Stem about 2 feet high, very straight ; the 

 whole plant of a pale gravish hue. Radical and lower leaves 4-5 inches 

 long; the cauline ones diminisliing in size upwards, those at tlie summit and 

 on the peduncles less than half an inch in length, strongly appressed. Flow- 

 ers 20 or more in each head, (instead of 6-8 as described by Nuttall), bright 

 purple. Scales of the involucre imbricated in about 3 series. Chaflf of the 

 receptacle lanceolate, resembling the inner scales of the involucre, rigid, 

 colored and often hairy at the summit, nearly as long as the flowers. — We 

 have not seen the var. (3. 



* * Leaves plane, lanceolate, spatulutc, or oblong : heads corymbose-cymose. 



2. C. tomentosus : stein tomentose-puberulent above, corymbose at the 

 summit; leaves punctate, mostly nearly glabrous, acute; the radical ones 

 lanceolate or lanceolate-spatulate, tapering into a petiole, somewhat 3-nerved ; 

 the cauline small, scattered, lanceolate or ovate, sessile, slightly appressed ; 

 the uppermost pubescent; heads 1—5 on each branch of the loose and spread- 

 ing corymbose cyme; scales of the somewhat cylindrical-cam panulate invo- 

 lucre ovate or ovate-lanceolate, acute, appressed, or with slightly spreading 

 tips, very tomentose and glandular; lobes of the corolla ovate-lanceolate; 

 pappus rather strongly barbellate. — Liatris tomentosa, Michx. ! jl. 2. p. 93; 

 Pursh, fi. 2. p. 510; Curtis ! pi. Wibningt., in Boston, jour. nat. hist. 1. p. 

 127 ; not of Ell. L. Waited, Ell. ! sk. 2. p. 285 ; DC. I. c. Anonymos 

 uniflora, Walt. Car. p. 198. 



Margin of swamps, Virginia (Pursh) and North Carolina, Michaux ! 

 Mr. Croom! Mr. Curtis ! \o Georgia, Dr. MacBride ! (Elliot t.) Sept.- 

 Oct. — Stem about 2 feet high. Cyme sometimes simple with 5 or more 

 heads, but often corymbose with the branches elongated and much spreading. 

 Scales of the involucre imbricated in 4 or 5 series, hoary but often somewhat 

 colored, without scarious margins. Corolla deep purple. Pappus purplish. 

 Chaff of the receptacle (often wanting in the centre of the head) narrowly 

 linear, a little hairy at the tip, rather shorter than the flowers. 



3. C. bellidifolius : low, nearly glabrous; stems numerous from the sain e 

 root, slender, branching above ; radical leaves sjjatulate, 3-nerved, tapering 

 into a petiole, punctate with scattered impressed dots ; the cauline small and 



