306 COMPOSIT.E. \Ptjrrocoma. 



(Floribus spicatis, radice tuberosa.) 



L L, scariosa; magis minusve pubescenti-scabra, foliis lanceolatis inferioribus longe petio- 



latis superioribus linearibus multo ininoribus, floribus racemosis remotis, pedlcellis brac- 



teatis, involucris globoso-hemisphsericis, squamis obovatis obtusissimis membranaceis coloratis 



subciliatis, flosculis numerosis, pappo scahro.— Wiild, Sp. PL r. 3. p. 1635. Fursh, Fl, Am. 



V. 2. p. 509. Flliott, Carol v, 2. p. 280. Sims, Bot Mag, t 1709. Bigel Fl. Bost. ed. 2. 



p. 293.— Liatris squarrulosa. Mich. Am. v. 2. p. 92.— Serratula scariosa. Linn. Sp. PL 

 p. 1174. 



Hab. Plains of the Saskatchauan and of the Red River. Drummond. Douglas. 



2. L. squarrosa; glabriuscula vel pubescenti-scabra, foliis linearibus obscure trinerviis 

 inferioribus longe attenuatis superioribus minoribus, racemo flexuoso paucifloro folioso, 

 floribus breve pedicellatis nunc sessilibus, involucris ovato-cylindraceis, squamis magnis 

 patenti-squarrosis exterioribus majoribus rigidis foliaceis trinerviis interioribus membran- 

 aceis mucronato-acuminatis vix coloratis, flosculis plurimis, pappo plumoso.— fr?7/J. Sp, PL 

 V. 3. p. 1634. Mich. Am. v. 2. p. 92. Pursh, FL Am. v. 2. p. 509. Elliott, Carol v. 2. p. 

 282.— Serratula squarrosa, Linn.— p. luxurians. L. intermedia. LindL in Bot Peg. t. 942. 



Har. Canada. Mr, Goldie. Douglas.— \ aviMe in puhescence,as are the other species of this beautiful 

 and favourite Genus. I fear the Z. intermedia of the Bot. Ueg. can only be considered a luxuriant state of 

 the present. ISIr. Goldie's original specimens in my Herbarium do not at aU differ from the true squarrosa ; 

 and the cultivated individual only exhibits long-er flower-stalks. 



3. L. punctata; caule erectiusculo piloso, foliis linearibus marginatis glabris ciliatis 

 utrinque impresso-punctatis, spicis elongatis densis non raro foliosis, involucris subcylindra- 

 ceis, squamis imbricatis non squarrosis exterioribus rigidioribus omnibus impresso-punctatis 

 pungenti-acuminatis marginibus ciliato-lanatis, pappo valde plumoso. (Tab. CV.) 



Catdis pedalis ad sesquipedalem, erectus vel adscendens, striatus, glaber vel rarissime pilosus. Folia 

 numerosa, 4-5-pollicaria, linearia, infima basi dilatata, amplexicaulia, superiora sensim minora, omnia linearia, 

 n^da, acuta, unmervia, plana, marginata, margine albido, remote ciHata, pagina utrinque glaberrima, impresso- 

 punctata. Sptca (sen racemus spicatus) elongata, parte inferiori siepe foUosa, densiflora. Involucrum lato- 

 cyhndraceum, squamis imbricatis impresso-punctatis margine ciliato lanatis mucronato-acuminatis, mucrone 

 subrecurvo, estenonbus rigidis, viridibus, interioribus magis membranaceis s^pe coloratis. Flosculi suh- 

 quinque,pulcherrimerosei. ^cAfim«m lineari-clavatum, subtriquetrum, striatum, pUosum. Pfl/>pus plumosus. 



Hab. Plains of the Saskatchawan, JOrummond; and on the Red Deer and Eagle hiUs, in dry soils 

 common. 7>o«^/«^._Neither among the numerous individuals in my Herbarium, nor the species described 

 in books, do I find any that agree with this, though its nearest affinity is perhaps to Z. resinosa of 

 JSuttall. Here, too, without doubt, the impressed dots, so remarkable on the leaves and involucre, are 

 occasioned by resinous glands. The spike is generally half as long as the plant. 

 Tab. CV. Liatris punctata. Fig, 1, Leaf; ^g. 2, Flower; Jig. 3, Floret ; fg. 4, Fruit '.-magnified. 



21. PYRROCOMA. Nov, Gen. 



Pappus uniscrialis, flore longior, fulvus, scaber. Cor. limbo a tubo non distincto. In- 

 volucrum multiseriale, \axum ;foliolis interioribus membranaceis integerrimis ; ext. foliaceis 

 spinuloso-dentatis.— Herba Boreali- Americana ; foliis alternis, coriaceis, subspinoso-dentatis, 

 punctato-pellucidis ; capitulum terminate, solitarium; involucris imbricatis.— ^omer\ d ttv^^c^ 

 fulvus, et *«^,,, hair ; ob pappi colorem derivatum. 



