﻿80 PLANTS FENDLERIAN.E. 



f376. F. Hookeriana, var. foliis magis strigosis subincanis. (F. montana, Nutt. ! 



1. c.) Sandy bed of Dry Creek, east of Bent's Fort ; Sept. (408.) 



' f377. F. discolor, Nutt. I. c. Between the Rio Colorado and Rock Creek, New 

 Mexico; Aug. (411.) — Also gathered by Fremont on the Platte in the Wind River 

 chain of the Rocky Mountains. The fertile involucres are armed with a few strong, 

 subulate spines, one-celled, or two-celled at the base. 



• f378. F. tenuifolia (Harv. 8,' Gray, PL Coult. ined.) : caule erecto hispido ; ramis 

 diffusis gracilibus; foliis bipinnatisectis strigoso-hirsutis subcinereis, pinnis segmentis- 

 que 3-7 linearibus integris seu 1 - 2-dentatis cum lobulis paucis secus rachin angustam 

 parce hispidam hinc inde interpositis, lobo terminali praelongo; racemis spiciformibus 

 gracilibus in paniculam foliosam digestis ; involucris masculis pedicellum sequantibus 

 7-8-dentatis 6-12-floris, fcemineis inferne glomeratis aculeis paucis brevissimis unci- 

 natis armatis intus bilocellatis bifloris. — Pofii Creek, between Bent's Fort and Santa 

 Fe ; also at Santa Fe ; July to Oct. (406.) — This appears to be the same as a plant 

 in Coulter's Californian collection ; and perhaps is too closely related to F. hispida, 

 Benth. in Bot. Voy. Sulph. p. 25 ; but the lobes of the leaves are not " dentibus obtusi- 

 usculis brevibus crispis," but entire or nearly so ; the sterile involucres are merely tooth- 

 ed, and the fructiferous involucres examined are only two-celled. 



S f379. F. tomentosa (sp. nov.) : herbacea, pube sericeo molli undique argenteo- 

 incana ; caule erecto (pedali) paniculato ; foliis pinnato-3 - 5-partitis subtus praesertim 

 dealbatis in petiolum brevem angusto-marginatum lobulis dentiformibus hinc inde appen- 

 diculatum decurrentibus, infimis videtur bipinnatifidis, lobis superiorum et ramealium ob- 

 longis lanceolatisve dentatis seu integerrimis, nisi terminali maximo trilobo; involucris 

 masculis in racemum densuni digestis 6-dentatis 18-20-floris fcemineis in axillis supremis 

 glomeratis ovoideis viscoso-puberulis aculeis subulatis validis apice subuncinatis obsitis 

 atque 2 crassioribus rostratis intus bilocellatis bifloris. (Ambrosia tomentosa, Nutt. Gen. 



2. p. 186 ?) — High banks of Walnut Creek, between Council Grove and Fort Mann, of 

 the Arkansas; Sept. (412.) — Root perennial. Stem stout, bearing numerous panic- 

 ulate branches. Leaves silvery-tomentose and very white underneath, the upper sur- 

 face whitened with a less dense and somewhat deciduous pubescence ; the terminal lobe 

 from li to 2i inches in length and half an inch to an inch in width. Sterile involucre 

 3 lines in diameter ; the fertile (immature) larger, thickly beset with short and stout 



apicem squamas dilatato-obovatas basi vix crassiores in verticillum congestas gerente. — Along the valley of 

 the Gila, Lieut. Emory. Also at " Ojito," New Mexico ? Dr. Gregg. Shrub 4 or 5 feet high, with much the 

 aspect of a Wormwood ; the filiform leaves about two inches long. Fertile involucres only one fourth the 

 size of those of the foregoing species. I have not examined the sterile heads. 



