f 



'H 



V. 



PLANT.E WRIGHTIAN^. 



97 



the othcr hand, I ani unable to draw a marked line of distinction betwccn this L. 

 coronopifolia and a small group of plants with 15 - 25-flowered heads and morc 

 herbaceous tips to the scales of the involucre, on one of which Dc CandoUc foundcd 

 his Aplodiscus, as a section of Aplopappus. Indecd, the A. (Aplodiscus) discoideus, 

 DC. ! is the same species as the Linosyris Mexicana, Schlcchf. Ilorf. ILil p. 7. f. 4 

 (as well as Baccharisl veneta, H.B.K. /). Grcgg's No. 580, gathcred betwccn San 

 Luis Potosi and Mexico, is a variety of tliis with pinnatifid leaves. No. 114 of 

 Hartweg's Mexican collection is an allied species, with much smaller hcads ; and 

 here likewise belongs Aplopappus (Aplodiscus) Menziesii, Torr. ^ Gray, of Cali- 

 fornia. A. (Aplodiscus) ramulosus, DC /,. which is Grcgg's No. 625 (from Real 

 del Monte, and 790 of his last collection) , appears also to be of this group, aUhough 

 of a different habit, and with nearly subulate appendages to the style. Linosyris 



Drummondii, Torr. §• Gray, of which better flowering spccimens wcre recently 

 gathered at Port Lavaca, Texas, by M. Trecul, has the many-flowered heads and 

 the involucre of this group, with the foliage of L. heterophylla.* 



288. Aplopappus (Blepharodon) blephariphyllus (sp. nov.): scabro-pubcrulus, 

 subcinereus ; caulibus erectis herbaceis usque ad apicem foUosis ; ramis subcorym- 

 bosis monocephaUs ; foliis spathulato-oblongis (rameaUbus lineari-oblongis) coria- 

 ceis crebre serratis et pectinato-setigeris ; involucro nudo hemispha^rico, squamis 

 pluriserialibus lanceolato-subulatis glabellis apicibus brevibus subsquarrosis; pnppo 

 biseriali rigido achenio brevi sericeo-pubescente subduplo longiore. — Plains at the 

 eastern base of the Guadalupe Mountains; Oct. — Plant a foot or less in height 

 from a suffrutescent % base, rigid, with much the aspect of a Grindelia. Leaves 

 about an inch long, thick, scabrous, serrate all round with closely set teeth, which 



Involucre half an inch in diameter. 



are tipped with rigid rather short bristles. 



* 



Rays 15-18. Pappus not copious. 



290. A. spiNULOsus, DC^ var. glaber, Gray, Pl. Fendl. p. 75. 



On the Kio 



Grande, Texas. — Whole plant a little glandular, but entirely destitute of pubes- 



cence. 



291. A 



D C. Sideranthus spinulosus, Fraser, ex Steud. ; iV 



Neu-Wied. Biese, Appx. p. 14. Hills and prairies, from the Rio 



the San 



Felip 



Various forms, principally those with canescent and very spm 



A 



Torr. 8r Gray\ Fl. 2. p. 240 



On the Eio Grande, Texas 



A. phyllocephalus, DC. appears to be an abnormal state of this species.f 



292. A. GRACiLis, Gray, Pl. Fendl. p 



Dieteria (Sideranthus) gracilis, Nutt. 



Pl. Gamh., in Jour. Acad. Philad. (n. ser.) 1. p. 177 



Between the Pccos and the 



Limpi 

 slende 



Aug 



The canescent form 



span to a foot high, with long and 



r 



divergent branches 



Leaves small, rather appressed 



Fl. Bor. Am., is Aster (Oxytripolium) angustus 



Lindl. 



t Aplopappus (Blepharodon) gymnocephalus, DC, collected in Mexico by Alaman, Berlandier, Tate, 

 Bates, and Coulter, has the rays to all appearance yellovv in some specimens, while in others they have 

 assumed a reddish hue underneath (as noficed by De Candolle), as if they had been pale purple or rose- 

 color, in which case the plant would be a Machaeranthera. Perhaps it is M. sctigera, Nees m Lmnaia, 19. 

 p. 722. The receptacle is strongly fimbriUiferous. 



