﻿PLANTS FENDLERIANJE. 105 



426. Achillea Millefolium, Linn. Moist meadows and foot of mountains along 

 Santa Fe Creek ; June - Oct. (509.) Also a variety with rose-colored flowers.* 



reous with a viscous pubescence and, especially the summit of the branches (which are leafless for only one 

 or two inches), hirsute with glandular-capitate hairs. Heads nearly as large as those of T. procumbens : but 

 the ligules are considerably longer and "red" according to the note of Dr. Wislizenus: in the specimen 

 some of them are of a deep pink-purple, others of a lighter hue. Disk-corolla (light-yellow), styles, achenia, 

 and pappus nearly as in T. procumbens, except that the pappus is much shorter. The ligules exhibit two 

 small interior lobelets, just as Sogalgina, Cass, is characterized (a genus which otherwise does not seem to be 

 very distinct) ; but as I notice a similar, although single, often emarginate, small lobelet, in Tridax procum- 

 bens, I do not hesitate to refer our plant to that genus. 



* The following is a very striking, chiefly New-Mexican genus of Anthemideae-Chrysanthemere : — 



• 



BAILEYA, Harv. 8? Gray, in PI. Coult. ined. 



Capilulum 16-500-florum, heterogamum ; fl. radii 6-60, ligulatis, foemineis, 1 -3-serialibus, marcescenti- 

 persistentibus ; disci tubulosis hermaphroditis. Involucrum lanatissimum 1-2-seriale, e squamis linearibus 

 sequalibus appressis constans. Receptaculum planum, nudum. Ligula: ovales vel cuneatse, 7-nervire, apicc 

 3-loba:, basi unguiculata sessiles (tubulo nullo), post anthesin papyraceo-membranacea;, persistentes. Corolla' 

 disci cum ovario atomis resinosis conspersa; ; tubo brevi ; fauce infundibuliformi breviter 5-dentata ; dentibus 

 ovatis glanduloso-barbulatis. Styli rami fl. hermaph. apice truncato barbatuli. Achenia lineari-oblonga, 

 prismatica, vel subteretia, multistriata, glabra, basi apiceque truncata, omnino calva. — Herboc hutniles, ut vide- 

 tur biennes, undique albo-lanosissimce ; foliis alternis pinnatifidis seu integris ; capitulis solitariis longe pedun- 

 culatis speciosis ; floribus flavis post anthesin pallescentibus. — This genus is dedicated to Prof. J. W. Bailey, 

 of the U. S. Military Academy, who is particularly distinguished for his researches among the minuter Alga? 

 and especially the Diatomacea; (which he was the first to detect in a fossil state in this country), for his 

 microscopical investigations concerning the crystals contained in the tissues of plants, and for the detection 

 of vegetable structure in the ashes of anthracite. Through B. pauciradiata this genus is not obscurely 

 allied to Riddellia, which belongs to the same region, and which it imitates in the persistence of the di- 

 lated rays. But in the lineal series it would appear to stand next to Monolopia. There are three species 

 known, viz.: — 



# Oliganlhtr, villoso-lanata;. 



S 1. B. pauciradiata (Harv. 8f Gray, I. c.) : diffuse ramosissima; foliis (imis ignotis) caulinis et rameali- 

 bus linearibus integerrimis ; pedunculis subcorymbosis ; involucri campanulati squamis 8-10 uniserialibus ; 

 ligulis 5-6 ovalibus subtridentatis brevissime unguiculatis ; floribus disci 10-12; acheniis subclavatis elongatis 

 valde striatis muricato-scabris. — California, Coulter. — Stems 6 or 8 inches long (the base unknown), villous, 

 like the leaves, &c, with lax or spreading woolly hairs. Peduncles filiform, an inch long. Rays 3 lines 

 long, reflexed, overlapping each other, as long as the narrowly campanulate involucre. 



# # Myrianlhm, foccoso-t lanosissirn.ee. 



s 2. B. pleniradiata (Harv . 8f Gray, I. c.) : caule ramisque simplicibus strictis apice longe nudis; foliis 

 inciso-pinnatifidis vel paucidentatis, summis parvis linearibus integerrimis; involucri late campanulati squamis 

 20-30; ligulis 25-40 obovato-dilatatis breviter unguiculatis involucro longioribus post anthesin deflexis el 

 pluriseriatim imbricatis; fl. disci 40-50 ; acheniis subprismaticis utrinque truncatis laevibus vel globulis resi- 



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