V. 



PLANT^ WEIGHTlAN.fL 



367. Thymophylla Greggii 



2, 



119 



VII.) 



Oct.: 



3 



Gray, PI. Fendl p. 9l^ ad, 



Rocky banks of streams east of tlie Guadalupe Mountains, and on tlie Pc 



growing in large bunches 



in these specimens, I find nothii 

 which no rays are to be detected 



Excepting the rays, which are uniformly prescnt 



distinguish this froni Dr 



Pl 



No. 284 in Dr. Gregg's collection of 1848, 1849 

 from Buena Vista, also rayless, is T. setifoHa, Lnrjasca, as also is No. 445 of CouL 



Zim _ 

 show the pappus of five or six 



T. Greggii these are united into an entire, or sometimes slightly lobed 

 cup '^'^' " - . - - 



A flowcr of this species is added to Plate VII 

 separate paleae, as charactcrized by Lag 



In 



The lower leaves in both are pinnately 3 - 7-parted. 

 368. Chrysactinia Mexicana, Gray, Pl Fendl p, 93, adnot 



Mountains: 



Rocky banks of 



Only a few specime 



eams east of the Guadal 

 AIso in the collection of 1851 



and Porophylleee is annihilated by this plant, which has the rays of the former and 



The distinction between the divisions Ta^ 



the 



pappus of the 



kewise is by the geuus N 



both a pilose and a paleaccous pappus in the same fio\^ 



I subjoin th 



of the latter genus, now confirmed by the discovery of a second species 



been published 

 should be.* 



369. POROPHY 



m 



which 



knowu to botanists as it 



SCOPARIUM (sp. nOY.) 



nudiusculis ; foliis involutis filiformibus- glandulis 



basi fruticosa erectis rigidis 



par 



mucr 



panulati brevi 

 obtusis coriaceis viridibus parce glandulo 



8 



\ r 



clieniis erostratis pube 



? 



NICOLLETIA, Gray in Frem, Rep. Expcd. 2.p. 315. 



Capitulum heterogamum multiflorum ; ligulis fcemineis; corollis disci tubulosis Eequaliter 5-denteitis. 

 Involucrum campanulatum e squamis 8- 12 membranaceis liberis. Receptaculum convexum favosum, 

 Styli ranii florum radii appendice angiista glabra, disci appendlce elongata filiformi hispida, supcrati. 

 Achenia lineari-elongata, subteretia, puberula. Pappus duplex ; exterior e setis pluribus caplllaribus den- 

 ticulato-scabris ; interior e paleis 5 lanceolatis hyalinis, nervo in aristam scabram producto. — IlerbEB 

 nance, annuce, glabrsc, odore haud ingratae ; foliis pinnatlparlitis plerisque alternis, lobis sa?pius grasse 

 uniglandulosis ; capitulis majusculis terminalibus ; floribus rubicundis i 



1. N. occiDENTALTS ( Graj/, Z. c.) : caule crassiusculo ; foliis subcarnosis, lobis brevibus ; involucro 



multifloro basi folioso-bracteato, squamis 10- 12 oblongis subbiscrialibus ; pappi palcis lanceolatis e basi 



sensim angustalis arlsta brevi superatis. — Sandy banks of ihe Mohave liiver in the intcrior of California, 

 Fremont, 



M 



•^. N. Edwardsii (sp. nov.) : caule exili ; lobis foliorum filiformibus elongatis ; involucro anguste cam- 



panulato 25-floro basi squamulis ovato-subulatls parce bracteato, squamis 8 lanceolalis uniscrialibus : pappi 



paleis ovato-Ianceolatis arista gracili superatis. (Tab. VIII.) — Near Guajuquilla, Chiliuahua, Mexico, 



•^^0-5 F)r, Edwards. Described and figured from a specimen in Dr. Torrcy's herbarium. — The plant is 



an annual, three inches high, vvilh thc heads only half as large as those of N. occidentalis. Tlie flowers 



are said to be pink-colored. Each lobe of the leaves bears, towards its tip, a single vcry large gland ; and 



there are a few in the scales of the involucre. The inncr palese of the pappus are not unlike ihose of 



Adenophyllum ; but in place of the five cuneiform and truncate palea) vve have a series of 20 to 40 vcry 



slender capillary bristles, as long as the palese, and somewhat clustcred alternate vvith and exterior to thcm, 



so that on tearing ofl^a palea two small clusters of bristles, one on each side of its basc cxternally, are de- 



tached with it. 



