OF ARTS AND SCIENCES. . 83 



Arctostaphtlos Andersonii. a. tomentosce affiuis ; ramia 

 gracilioribus setis longis albis hispidis ; foliis teuuiter coriaceis fere 

 sessilibus glabris (costa subtus setosa excepta) viridibus oblongo- 

 lanceolatis basi sagittato-cordatis saspe spinuloso-serrulatis ; drupis 

 viscosissimo-hirtis. — Hills behind Santa Ci'uz, California, Dr. C. L. 

 Anderson, 1673. 



HESPERELiEA, Nov. Gen. Oleacearum. 



Calyx tetrasepalus, fEstivatione imbricativus, deciduus. Petala 4, 

 spathulata, unguiculata, fEstivatione apicem versus imbricata, accrescen- 

 tia, deridua. Stamina 4, hypogyna, petalis alterna: filamenta subu- 

 lata : antherse oblongae, subintrorsai, mucronatie. Ovarium ovoideum : 

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

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

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

 integerrimis oblongis coriaceis e costa valida penniveniis ; paniculae 

 floribundie ramis pedicellisque brevibus articulatis ; floribus sulplfureis 

 hermapliroditis nunc ovario imperfecto polygamis. 



Hespeuel^a Palmeri. Guadalupe Island, off Lower California ; 

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

 in length. Sepals oblt)ng, somewhat scale-like and concave, greenish 

 becoming yellowish. Petals when full grown nearly half an inch 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 Montevidensis Spreng. Syst. ? ex char 

 C. Ludoviciana Torr. (ined. ?). C. intermedia Engelm. in herbariis & ex Nutt. 

 I. c. Dysmicodon Ca/ifornicum & ovatum, Nutt. 1. c. Specularia ocata Torr., 

 Vatke, 1. c. — S. Carolina to Ai'kansas, Texas, and in California ; also in S. 

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

 falcata of the Old World, ■which, however, has longer calyx-lobes, and, so far as 

 I have seen, homomorphous flowers. 



y 4. S. PERFOLiATA A. DC. Prodf., excl. sjn. nonnul. ; Torr. Fl. N. Y. 1, 

 p. 428, t. 65. Campanula flagelJaris HBK. Nov. Gen. 3, t. 265. Dysmicodon 

 perfoliatum Nutt. 1. c. Subhispida; foliis rotundato-cordatis quasi aniplexicaul- 

 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 wliich only the 

 close-fertilized blossoms are developed. ^ ■ • 



