NATURAL SCIENCES OP PHILADELPHIA. 05 



257. A. (Pyrrocoma) croceus, n. sp.* Subalpine, in the Middle Park, &c, 

 west of the Rocky Mountain range. 258. A. (Pyrrocoma) Fremontii. Pyrro- 

 coma fuliosa, Gray in Jour. Bost. Nat. Hist. Soc, 5, 1843. Low mountains, 

 lat. 39 3 . There is a Chilian A.foliosus; wherefore, in suppressing Pyrrocoma 

 as a genus, the name of this most rare and well-marked species may very 

 properly commemorate the discoverer. 259. A. (Pyrrocoma) Parryi, Gray, 

 Enuin. PI. Parry. 260. Chrysopsis villosa, Nutt., with the dwarf variety, 

 C kispida. 



261. Iva axillaris, Pursh; a broad-leaved form. 262. I. ciliata, Willd. 

 263. Ecriin >sv.\e (Cyclachjexa) xantiiiifolia, Gray. 264. Franseria tomen- 

 tosa, Gray, PI. Feudl. 265. F. Hookeriana, Nutt. 



266. Lepachys columnaris, Torr. & Gr. 267. Gaillardia aristata, Pursh. 

 26S. Helianthella unifloea, Torr. and Gr. Fine specimens. The aoheniaare 

 ciliate with very long hairs ; the awns are long, slender and persistent.! 

 269. Helianthus pumilus, Nutt.? Parry's No. 50. 270. H. petiolaris, Nutt. 



271. (& 420 of Parry.) Heliomeeismultiflora, Nutt. ; the broader-leaved form. 



272. Helenium Hoopesii, n. sp., a most striking species, seeds of which were 

 collected near Pike's Peak in the autumn of 1859, by Mr. Thomas Hoopes, 

 from which plants were raised by Mr. Halliday Jackson, of Westchester, Pa.f 



273. Actinella grandiflora, Torr. and Gr. ; equally fine specimens as those of 

 last year. 274. Actinella Richardsoxii, Torr. and Gr. 275. A. scaposa, Nutt. 

 var. {A. glabra, Nutt.) 276, 277. A. acaulis, Nutt., in different forms. 278. 

 Bahia oppositifolia, Torr. and Gr. 279. Thelesperma (Cosmidium) gracile, 

 Gray. 280. T. filifoliuji, Gray. 281. Villaxova chrysanthemoides, Gray. 

 282! Hymenopappus tenuifolids, Pursh. 283. Ch.enactis achille^folia, 

 Hook. Arn. ; a low form from the alpine region. 284. C. achillea;folia, var. 



exterioribus paullo brevioribus; foliia parvulis, caulinis superioribus gradatim minoribus (6-3 

 lia. longis) acutioribus. /3. II alli: involucri squamis plerisque latioribus, extimis oblongo-lme- 

 Biibus diSL-um ada?quantibus ; foliis etiam caulinis magis spathulatis, summis pollicaribtis capi- 

 tulum adrequautibus, radicalibus bipollioaribus. Head half an inch long and wide. Ligules ex- 

 serted, 3 or i lines long. Appendages of the style in the disk-flowers oblong-lanceolate. Ovaries 

 in Hall and Harbour's plant sparsely beset with a few slender hairs ; in Dr. Lyall's glabrous. 



* Aplopappus (Pyrrocoma) croceus (sp. nov.); caule ultrapedali parce foliate tnonocephalo 

 pi'iaium launso : foliis coriaceis glabris integerrimis haud eximie reticulars, radicalibus oblongo- 

 lauceolatis (cum petiolo pedalibus), caulinis lanceolatis oblongisve basi semi-amplexicaulibus; 

 capitulo nuilo inaximo; involucri hemisphaerici squamis ovalibus obtuslssimis muticis, interioribus 

 margine subscarioso-erosis; ligulis 50 et ultra longe exsertis supra croceis; ovariis breviusculis 

 glaberrimis ; pappo albido corollam disci adajquante. Allied to Pyrrocoma radiata, Nutt., which, 

 however, is probably not distinct from Aplopappus (Pyrrocoma, Hook.) carthamoides. But the 

 leaves are less coriaceous and reticulated ; the head naked, peduncled, and I believe nodding ; invo- 

 lucre au inch in diameter; the long exserted rays nearly an inch in length; the ovaries far 

 shorter, and the pappus white. But I have this only in flower, and P. radiata in fruit. 



t The following, apparently quite distinct, new species of this genus, was sparingly collected by 

 Dr. Parry in Middle Bark, near the foot of Bike's Peak. I have also received a specimen from Mr. 

 Hall. It is distinguished by its small leaves and heads, thin and scarious chaff, and the awnless 

 achenia crowned with hyaline squamellse, which are resolved into a villous fringe that equals the 

 proper tube of the corolla in length. 



Heliantiiella Parryi (sp. nov,): pedalis, hirsuta; foliis triplinerviis lanceolatis vol radicalibus 

 spathulatis, caulinis superioribus sublinearibus 1- 2-pollicaribus ; capitulis 2-3 parvulis brevissime 

 pednnculatis; receptaculi paleis tenui-scariosis apice truueato barbulatis; ovariis oblongis (exteri- 

 oribus saspius promisee, interioribus superne parce villoso-ciliatis) exaristatis ; paleis pappi circ. 4 

 latis tenuissime hyalinis in villum tubum proprium corollas adaequantem solutis. Involucre only 

 half an inch long; disk half an inch in breadth : ligules 7 to 9 lines long. 



X Helenium Hoopesii (sp. nov.): caule valido tomentuloso sesqui-bipedali oligocephalo ; foliis 

 glauco-pallidis crassiusculis punctatis mox glabratis subnervatis integerrimis, radicalibus lanceo/- 

 lato-spathulatis in petioluni brevem alatum angustatis. caulinis oblongo-lanceolatissenii-amplexi- 

 caulibus ; pedunculis sursum incrassatis; capitulis pro genere maximis : involucri squamis lanceo- 

 latis seu linearibus ; receptaculo subgloboso ; ligulis 20-25 linean-cuneatis (pollicaribus) cum 

 disco aurantiacis; pappi paleis lanceolato-subulatis enerviis corolla disci paullo brevioribus 

 achenium sericeo-villosum wquantibus. " South Bark and west of Bike's Beak." Radical leaves 

 to 11 inches long, tapering into a petiole-like base or flat and winged petiole : the cauline ones 

 successively shorter and more dilated at the base, the uppermost 1J to 2 inches long. Disk in the 

 wild specimens an inch in diameter, and the numerous orange-yellow rays an inch long. Baleae 

 of the pappus tapering to a sharp point, but not awned. This species is one of those which go to 

 fill the interval between Helenium and Actinella, but is clearly of the former genus. 



1SC3.] 



