Tagetes. COMPOSITE. 359 



quarter-inch high : rays oval, short : Teceptacle flat and wholly naked : palea? of inner pappus 

 narrowly lanceolate. — PI. Fendl. 90 (as H. gnaphalodes) & 115 ; PI. Wright. 1. c. Gnaphali- 

 opsis micropoides, DC. Prodr. yii. 258. — Hills and plains, S. Texas, Wright, Havard, &c. 

 (Adj. Mex. ; first coll. by Berlandier.) 



§ 4. ThymophIxla, Gray. Paleas of the pappus 5 to 12, truncate and muti- 

 cous (yet in one species occasionally some are short-awned ! ), somewhat coriaceous, 

 distinct or cupulately connate. — Proc. Am. Acad. xix. 42. Thymophylla, Lag. 

 Nov. Gen. & Spec. 25 ; Gray, PI. Fendl. 91, & PI. "Wright, i. 119, t. 7 ; Benth. 

 & Hook. Gen. ii. 410 (as Thymophyllum). 



# Fruticulose plants, with habit and character of the acerose-leaved genuine species of Eymena- 

 therum, but white tomentose, and rays in one species wanting. 



H. setifolitjm, Gray, 1. c. ( Thymophylla setifolia, Lag. 1. c, on which the long imperfectly 

 known genus was founded), may possibly reach our limits. It has a canescent involucre, no 

 rays, and normally » pappus of 5 or 6 distinct quadrate paleoe. But in some specimens of 

 Parry and Palmer's no. 516 occurs an inner alternating series of longer and narrower aristate 

 paleas, — completely invalidating Lagasca's genus. 



H. Greggii, Geay. A span or two high in dense tufts : branches thickly leafy up to the 

 filiform glabrate peduncles : leaves white-tomentose, short, Heath-like ; lower 3-7-parted, 

 upper entire, setaceous : involucre campanulate, glabrous, naked at base : rays 10 to 12, 

 short, but distinctly exserted, sometimes wauting : paleas of the pappus united into an entire 

 truncate cup. — Proc. Am. Acad. xix. 42. Thymophylla Greggii, Gray, PI. Pendl. 92 (speci- 

 men apparently rayless), & PI. Wright, i. 109, t. 7, radiate. — S. W. Texas, on the Pecos, &c, 

 growing in large bunches, Wright. (Adj. Mex., Gregg.) 



# # Annual, wholly glabrous, wholly resembling H. polychcBtum and its near allies, except the 

 pappus. — Lowellla, Gray. 



H. aureum, Gkat. A span or two high, erect or diffuse, much branched, bearing numer- 

 ous short-peduncled heads : leaves mostly alternate, pinnately parted into 7 to 9 linear-fili- 

 form pointless divisions : involucre broadly campanulate, 3 lines high : rays about 12, oblong, 

 3 lines long : pappus of 6 or 8 quadrate or oblong and erose-truncate paleae, in length little 

 exceeding the breadth of the akene. — Proc. Am. Acad. xix. 42. Lowellia aurea, Gray, PI. 

 Fendl. 89, & PI. Wright, i. 11 8. ^Plains of Colorado to W. Texas; first coll. by Fendler, 

 next by Wright. 



168. TAG3STES, Tourn. (A name of the early botanists for the 

 " French " or " African Marigold " of the gardens, T. patula, and its larger 

 form, T. erecta, L. Fuschius says it was applied by Apuleius to the Tansy : 

 some derive the word from Tages, an Etruscan deity.) — Mexican and S. Amer- 

 ican herbs, mostly annuals, strong-scented, branching ; with opposite and some- 

 times alternate leaves, in one species nearly entire, in most pinnately divided, 

 having copious oil-glands, bearing large and showy or small and comparatively 

 inconspicuous heads of mostly yellow or orange flowers, in cultivation some flame- 

 colored or reddish. — Inst. 488, t. 278; L. Gen.; DC. Prodr. v. 642; Gray, 

 Proc. Am. Acad. xix. 42. 



T. LtfciDA, Cav., the species with simple and narrow sessile leaves, and cymose heads with 

 2 or 3 rather showy rays, may yet be found within our Mexican border. One of our two in- 

 digenous species has handsome exserted rays, the other has inconspicuous rays and the most 

 slender heads in the genus. 



T. Lemmoni, Gray. Nearly glabrous, 2 or 3 feet high from a perennial root, lignescent at 

 base, rather slender, fastigiately branched, bearing numerous cymosely disposed heads on 

 slender short peduncles : leaves all opposite, 3-7-foliolate ; leaflets lanceolate-linear or some- 

 times lanceolate-oblong, with attenuate base, serrulate, not setiferous (an inch or two long), 

 sometimes a minute lower pair : involucre turbinate-campanulate, 4 lines high : rays 6 to 8, 

 nearly half-inch long, obovate-oblong : lobes of the disk-corolla nearly beardless: pappus 



