OP ARTS AND SCIENCES. 41 



ratis (liii. 2-4 latis, majoribus sesqui-bipollicaribus) ; pedunculis brevi- 

 usculis gracilibus subulato-bracteolatis ; involucre oblongo-campanulato 

 subturbinato glandulis ovalibus oblongisve raaculato ; ligulis G-8 semi- 



nccted this with 11. icnuilobum, DC. ; but having two or three akenes and pappus 

 of the original in herb. Jiissieu, I can nearly identify it with a plant collected 

 by Schaffner in the " Valley of Mexico, no. 81," given to me by Schultz Bip., 

 under the name of //. dlffusum. Tlie two, and also the next, appear to be quite 

 alike except in the pappus. Cassini's plant probably was not Cliilian. 



H. NyEi, DC. Prodr. v. G42. Pappi pales 10, oblongas vel obovatffi apice 

 bifida?, lobis muticis, aut omnes aut 0-7 aut 5 intcriores longe tenuiter aristat<B. 

 — Gray, PI. Wriglit. 1. c. Also II. bceberoides. Gray, 1. c. This is no. 517, coll. 

 Parry ^- Palmer (referred to //. diffusum in Henisley's Bot. Biol. Centr.-Am.), at 

 least as to my specimen. I seem not to have no. 513. 



H- ^- Herbas perennes vel subperennes radice gracili, glabrae vel glabellaj ; pe- 

 dunculis sparsis longiusculis, foliis plerisque altornis rigidiuscuiis mucrone 

 acutissimo vel setuliformi apiculatis : pappi paleaj 10, consimiles, omnes 2-3- 

 aristatae. 

 H. WuiGnxii, Gray, PI. Fcndl. 89. Subpedale, sajpius erectum; foliis in- 



tegerrimis vel paucilobatis angusto-linearibus vel subfiliformibus ; capitulis 



majusculis. — Texas. 



H. TENUiLOBUM, DC. 1. c. Diffusuni ; foliis pinnatipartitis, lobis brevibus 



subulato-filiformibus ; pnppo rigidulo, aristis palea vix loiigiorilnis. — ll.tenui- 



fuliujii, Gray, PI. Wright, i. 118, non Cass. — Texas and adjacent Mexico. 



-1- .f- H- Hcrba3 perennes basi plerumque suffruticulosae ; pedunculis elongatis 

 filiformibus ; foliis rigidioribus pinnato-3-7-partitis, segnientis fililbrmibus seu 

 acerosis setuloso-apiculatis : pappus lOpaleaceus ; 



++ Paleis omnibus aristatis vel subulato-acuminatis lanceolatis, exterioribus 

 brevioribus sajpius integerrimis, interioribus setuloso-bidentatis : planta3 pu- 

 beruliE, segmentis foliorum setaceo-acerosis. 



H. Belenidium, DC. Prodr. vii. 292. H. Candolleanum, Hook. & Arn. Jour. 

 Bot. iii. 320. — Tiie South Clulian species, from Mendoza, Gillies. And to this 

 belongs a plant in Hajnke's herbarium, at Prague, ticketed " //. Nmi " by- 

 Be Candolle. 



H. TiiURHERi. Facie 11. pentaclurti, sed fere hcrbaceum ; pappi paleis parum 

 biseriatis angusto-lanceolatis, minoribus aristato-subulatis. — II. tenui folium var. 1 

 Gray, PI. Wriglit. ii. 93. — Borders of W. Texas and Mexico, near El Paso, &c., 

 Wright (1408), Thurher (740) ; and a seeming form of the same was collected by 

 Parry in 1878. 



++ ++ Pappus plane duplex, utroque 5-paIeaceo scarioso ; paleis exterioris 

 brevioribus spatuiatis seu oblongis apice obtusis vel erosis muticis, interioris 

 lanceolatis oblongisve inter dentes 2 subulatos nunc aristulatos uniaristatis: 

 suffruticuloste, cinereo-pubescentes vel glabellae, Immiles, diffusie, Texauo- 

 Mexicana3. 



= OppositifoUffi, floribundaj. 



H. Hartwegi, Gray, PI. Wright, i. 117. H. Berlandieri, Benth. PI. Ilartw. 

 18, non DC. 



