336 



Tithonia tubceformis (Ortega) Casa. Diet. Sc. Nat. xxxv. 278 (1825); JMkniOun^ 



luha/ormis <_)rt.",nii, Hort. M;itr. Dec. 181 (1791-1800), About f> feet lii-ih. 



(IrowH oil the baiilis of the lagoou. Manzauillu, December 1 to ;^1, 1890. Ao. 



1076. 



Ill old liehls along streams. Colima," January 9 to February 6, 1890. No. 1220. 



Viguiera tenuis alba Kose, vav. iiov. Like tlio type, but lioads and leaves some- 

 what smaller, bracts ol" the iuvolucre and recc^jitacle iiiort; or less itiirplisji, and 

 rays white.— C.rassy hillsides among other plants. Colima, January 9 and Feb- 

 ruary 0, 1891 . No. ll.")l. Nearly past blooming at time of (■(dle<'tion. 



Viguiera lielianthoides II. V>. K. Nov. Gen. et Spec. iv. 226, t. 379 (1820). Only a 

 Bin'rle perfect plant was found, owing to the fact that dcmiestic animals eat it 

 with avidity. Agiabanipo, October 3 to 15, 1890. No. 811. 



Other specimens were collected at Colima, January 9 to Fcbruao-y 6, 1891. 

 No. 1131. 



These two forms liavo been referred to this polymorphous species, althougli 

 they (lifter considerably from each other. 



Encelia (Simsia) purpurea h'ose, sp. nov. Stems 2 to 3 i'eet high, with si>readiug 

 branches; yoimgerparts villose-pubescent: leaves ovate, (5 to 18 lines long, acute, 

 truncate or a little cunoato at base, entire or somewhat serrate, approsscd- 

 pultesceut on iioth sides, short-petioled : inflorescence somewhat corymbose; 

 peduncles (! to 18 lines long: heads slender, cylindrical, 3 to 5 lines long; bracts 

 of two lengths, ovate-lanceolate, aciit(^, somewhat hispid, 3- to 5-nerved, more or 

 less piirj)lish: invcdncral bracts cnuirginate or short-appendiculate, purplish: 

 rays 5 to 8, 2 to 3 lines long, a little exsertcd beyond the disk, sterile, slightly 

 2-to()thed, yellow: disk-corolhi2.l lines long, Avlth a very short proi)er tube (one- 

 fourth line long), a slender cylindrical throat and 5 small teeth: akeues strongly 

 flattened, 2A liiu's long, appresscd, pubescent: pajtpus of 2 nearly ecjual awns 

 a little longer than the akenes.— Only two jdants found, these in a creek 

 bottom. Colima, .lanuary 9 to February (5, 1891. No. U05. A i)eculiar species, 

 resembling E. exarintata in the color and shape of the involucral bracts, but of 

 different habit. 



Verbesina spliEerocephala Cray in Watson, Proc. Anier, A<ad. xxii. 428 (1887). 

 Leav<^s toothed. Bought in the market at (Jolima, .Fanuary 9 to February 0, 1891. 

 No. 1104. 



Spilanthes alba Willd. Sp. PI. iii. pt. 3. 1714 (1803). Involucral bracts about 8 : rays 

 none: corolla 4-toothed: outer akenes 3-anglcd; inner ones Hat: rocei)tacle high- 

 conical. Grassy plains and river bottoms, Colima, January 9 tt» February «'), 

 1891. No. 1192. 



This is the ,S. alba of Homslcy's lUol. Cent.-Amer., but dilVers from the descrip- 

 tion in the number and shape of the invohicnil bracts. Fcndler's No. lOf! from 

 the Islbmus of Panama seems 1o be the same species. S. pscHdo-acmfUa var. of 

 Capt. Wilkes" Exped. (probably from the East Indies) seems very near our 

 plant. 



Cosmos Bulfureua (^av. Ic. i. 56, t. 79 (1791). About 4 feet high, with a rough 

 pubescence: leaves hi- to tri-]tinnatifHl, often 12 inchesor nu)re long, with rachis 

 and midrib hisi)i(l; ultimate pinna, entire or 2- to 3-toothed : peduncles 7 to 

 10 inches long; bracts of outer inv(ducre 2 lines long, ovate-linear, 3-nerved; 

 inner involucre, twice longer, scarious; rays 6 to 8, oblong; 6 to 9 lines long, 

 3-toothed, "amber" or deep orange: akeues 8 to 9 lines long, including the long 

 beak, ni)wardly scabrous and with 2 si)readiiig awns. Not common, and at the 

 time of collection almost i)a8t blooming. Colima, .January 9 to February 6, 1891. 

 No. 1222. 



This species is the same as the one collected by Palmer in .Jalis(;o (1886) and 

 referr(^d as above by Dr Gray. 



I have not seen other sppciiHewa of this species, nor havy J seen CavaniUes' 



