OP ARTS AND SCIENCES. 83 



AuCTOSTAiniYLOS AxuKUSoxir. A. tomentoscE alRiiis ; raiuia 

 gracilioribus setis longis albis hispidis ; I'oliis tiiimitcr coriuoois fere 

 sessilibus glabris (costa subtiis sctosa exccpta) viri<libus obloiigo- 

 lauceolatis basi sagittato-cordatis sa'pe spinuloso-serrulalis ; dnipis 

 viscosissimo-hirtis. — Hills behind Santa Cruz, Califurnia, Dr. C. I.. 

 Anderson, 1873. 



HESPERELiEA, Nov. Gen. Oleacearum. 



Calyx tetrasepalus, sestivatione imbricativus, deciduus. Petala 4, 

 spathulata, unguiculata, festivatione apicem versus imbricata, accrescen- 

 tia, deridua. Stamina 4, hypogyna, petalis alterna: filameiita sul)u- 

 lata: antlier^ oblongaj, subintrorsaj, mucronata3. Ovarium uvoideum : 

 ovulis in loculis binis ab apice pendulis : stylus culumnaris : stigma 

 crassum, bilobum, lobis dorso parura sulcatis. Fructus sine dubio dru- 

 paceus. — Arbor 3-4-orgyalis, glabra; foliis plerumque oppositis 

 integei-rimis oblongis coriaceis e costa valida penniveniis ; paniculai 

 floribundfe ramis pedicellisque brevibus articulatis ; floribus sulpliureis 

 hermaphroditis nunc ovario imperfecto polygamis. 



Hespereljea Palmeri. Guadalupe Island, off Lower California ; 

 found only in a canon on the eastern side. Leaves 2 inches or more 

 in length. Sepals oblong, somewhat scale-like and concave, greenish 

 becoming yellowish. Petals when full grown nearly half an incii long, 

 pale lemon-colored ; the claw about the length of the sepals and the 

 filaments. A very marked new genus, of the Oleineous tribe, remark- 

 able for the wholly distinct and unguiculate petals, with imbricative 

 aestivation, and the apparently uniformly isomerous stamens. 



Fl. Per. 2, p. 55, t. 200, fig. 6. C. Montcvidensis Spreng. Syst. ? ex char. 

 C Ludoviciana Torr. (ined. ?). C. intermedia Engelra. in jierbariis & ex Nutt. 

 1. c. Dysmicodon Cali/oniicum & ovatiim, Nutt. 1. C. Specularia ovata Torr., 

 Vatke, 1. c. — S. Carolina to Arkansas, Texas, and in California ; also in S. 

 America. Singularly confounded with the next. It much more resembles 5. 

 falcata of tiie Old World, winch, however, has longer calyx-lobes, and, so far as 

 I have seen, homomorphous flowers. 



4. S. PERFOLiATA A. DC. Prodr., excl. syn. nonnul. ; Torr. Fl. N. Y. 1, 

 p. 428, t. 65. Campanula flagellaris HBK. Nov. Gen. 3, t. 265. Di/smirodon 

 perfoliatum Nutt. 1. c. Subhispida; foliis rotundato-cordatls quasi amplexicaul- 

 ibus ; capsulis brevioribus basi angustioribus, valvulis infra medium sitis. — 

 Canada to Texas, Oregon, Mexico, &c. Triodallus rupestris Raf., according to 

 specimens in herbaria, is a depauperate and diffuse state, in which only the 

 close-fertilized blossoms are developed. 



