Tanacetum.] COMPOSITE. 337 



basi pedicellique albo-villosi. — 7. Wormskioldii. (Bess, Monogr. Art, ined.) incana, subsericea: 

 folia radicalia longe petiolata S-S-fida, laciniis 3-2-fidis, rarius 5-fidis vel indivisis, lineari- 

 lanceolatis 5"; caulina infcriora iis similia, minora et brevius petiolata: floralia 5-3-secta 

 vel simplicissima linearia : calathidia racemosa, e singula axilla gemina, altero subsessili, 

 pedunculi infimi 2-3-fIori; periclinii squamse medio fuscse, flosculi $ apice pilosiili. 

 Cauiis 15". 



Hab. Labrador. Kohlmeister, Hr.Morrison. Arctic Shores of North America. Dr. Richardson. Jiocky 

 Mountains. Brummond. — /. Columbia River and Islands, North -West America. Douglas. Dr. Scouler. 

 Kotzebue's Sound. Messrs. Lay and Collie, 



There are still some specimens in my collection, which, from the extreme difficulty in characterizinjr the 

 species of this Genus, and the want of more perfect individuals, I am obliged to leave undetermined. Mr. 

 Pursh gives the " A, Chinensis; foliis inferioribus cuneiformibus obtusis trilobis, snporioribiis linearlbus 

 obtusis, floribus globosis pedunculatis ccmuis," (Willd.), as a native of the North -West coast, upon the 

 authority of Mr. Lambert's Herbarium. I possess the true plant, gathered in Kamtschatha by Chamisso, 

 but I have seen no American specimens. {II.) 



46. TANACETUM. Linn. 



Capitvlum homogamum aut heterogamum, floribus $ uniserialibus in ambitu, reliquis 



? fertilibus. Achenium anguiatum, disco epigyno magno. Pappus coroniformis, minutus 



et hinc inde subnullus, sequalis aut latere exteriori parum manifestior. — llc^rhsi per iotam 



orhem terrarum disperscB, foliis altcrnis, varie sectis; capitulis solUariis aut corymhosis aut 



corymhoso-paniculatisy imhricatis ; rachide magis minusve convexa, nuda. Less, 



1. T. vulgare; capitulis heterogamis corymbosis, foliis bipinnatifidis segmentis lanceolatis 

 inciso-serratis. — Linn, — Engl Bot. t, 1229. Pursh^ FL Am, v, 2, p. 522, 



Hab. Canada ; probably introduced. Mrs. Skepjyard. 



2. T, pauciflorum; caule simplici foliis longiore subunifloro, foliis bipinnatis villosis 

 sessilibus, flosculis omnibus hermaphroditis. Herb, Banks, — Rich, in Fravkl. \st Jonrn, ed, 

 2. App. p, 30. 



Had. Woody country, between lat. 54° and 64°, North. Dr. Richardson.—" Ulnaiis. Folia bipinnanata 

 et tripinnatifida, laciniis angustis obtusiusculis. Flos plerumque unicus terminalis iuterdum alter e suprema 

 axilla." Rich. L c. 



3. T.? suaveolens ; capitulis homogamis, ramis unifloris, receptaculo conico involucro 

 longiore inferne squamoso, foliis profunde bipinnatifidis laciniis linearibus acutis basi sub- 

 pectinato-pinnatifidis, (Tab. CX.) — T. matricarioides. Less,Syn, Gen, Compos, — Artemisia 

 matricarioides. Less, in Lirinwa, v, 6, p, 240. (excL syn. Tanaceti paucijiorii Rich, ?), 

 Santolina suaveolens. Pursh, FL Am. v. 2. p, 520. 



Radix annua, ramosa, fibrosa. Cauiis palmaris ad spithanueam, basi divisus, apice ramosus, teres, striatus, 

 subhirsutus, foliosus. Folia alterna, sessilia, circumscriptione oblonga, bipinnatifida, vix pilosa, basi lata 

 pectinato-pinnatifida, Idciniis linearibus angustis acutis. RamiwMitm^ senpedunadij terminales, sub sesqui- 

 unciam longi, nudiusculi, striati, apice paululum incrassati, uniflori. Involucrum, ratione fioris magnum, 

 hemispb aerie um, foliolis pauci-serialibus suba?quahbus, oblongis, glabris, raarginibus scariosis, albis. Flosculi 

 omnes tubulosi, hermaphroditi, flavi, inferiores paieacei, paleis scariosis, oblongis, obtusis, superiores nudi. 

 Coro//a brevis : tubo subtetragono compresso bialato, limbo campanulato, 3-3-dentato. Styli antheneqne 

 inclusi. Achenium oblongum ovatumve, leve. Pappus omnino nullus. 



