V. PLANTS WRIGHTIANiE. 77 



SAXIFRAGACE^. 



229^ Lepuropetalon spathulatum, Ell. Sk. 1. p. 370; Torr. 8f Gray, Fl. 1. p. 

 590. In wet places, Western Texas ; Feb., March. 



:|: Philadelphus serpyllifolius (sp. nov.) : ramosissimus, ramis confertis rigidis; 

 foliis in ramulos breves confertis vel fasciculatis parvis ovalibus vel ovato-oblongis 

 subpetiolatis trinervatis supra puberulis subtus cano-sericeis ; floribus subsessilibus 

 ochroleucis ; stylo brevissimo ; stigmate crasso 4-lobo ; capsula globosa. — Between 

 Western Texas and El Paso, New Mexico; coll. of 1851. — A most remarkable 

 species, apparently forming a low, rigid, subspinescent bush ; the leaves not half as 

 large as those of P. microphyllus itself, three to five lines long and from one to two 

 and a half wide, much crowded, obtuse, entire, green and pubescent or puberulent 

 above, the under surface white with a dense covering of appressed villous hairs. 

 Flowers much smaller than in any other species, very numerous, mostly solitary and 

 subsessile at the apex of the spurs or short leafy branchlets. Calyx silky-pubescent ; 

 the lobes ovate, half as long as the corolla. Petals only three lines long, oval, insert- 

 ed by a broad base, apparently cream-color. Capsule a line and a half in diameter, 

 4-celled. — The hairs which clothe the lower surface of the leaves, under the micro- 

 scope, are studded all over with tubercles, as also in P. hirsutus, and, more or less 

 evidently, in other species. 



FENDLERA, Engelm. 8f Gray, Nov. Gen. 



Calyx tubo turbinato 8-costato, cum ovarii basi connato ; limbo 4-partito, lobis 

 triangulatis sestivatione valvatis. Petala 4, ovato-deltoidea, unguiculata, erosa, de- 

 cidua. Stamina 8 cum petalis inserta : filamenta linearia, plana, apice bifurcata, lo- 

 bis lineari-attenuatis ultra antheram longe productis : antherse introrsse, mucronatae, 

 biloculares, longitudinaliter dehiscentes. Ovarium semisuperum, 4-loculare (loculis 

 sepalis alternantibus) : styli pilosuli conniventes, pi. m. coaliti : stigmata terminalia 

 simplicia. Ovula in loculis plurima, e placentis centralibus imbricato-pendula, ana- 

 tropa. Capsula Crustacea, ovoideo-conica, stylis persistentibus acuminata, basi ca- 

 lyce accreta, 4-locularis, ex apice septicida. Semina in loculis pauca pendula, imbri- 

 cata, oblonga, testa membranacea laxa reticulata deorsum alata. Embryo in albu- 

 mine paixo rectus, ejusdem fere longitudine ; cotyledonibus oblongis radicula supe- 

 ra duplo longioribus. — Frutex 2 - 4-pedalis ; foliis oppositis lanceolatis subsessili- 

 bus trinervatis integerrimis ; floribus ramulos breves terminantibus solitariis vel 

 ternis breviter pedunculatis, petalis albis. 



•]• Fendlera rupicola. (Tab. V.) — Var. o. Lindheimeri : glabriuscula ; foliis 

 planis (pollicem longis 3 lin. latis) subtus parce strigosis ; ramis sterilibus gracilli- 

 mis. On perpendicular rocks of the Guadalupe, above New Braunfels, Texas, 

 Lindheimer ; coll. of 1850, flowering in April. — Var. /3. Wrightii : foliis mino- 

 ribus plerisque lineari-lanceolatis subcoriaceis margine revolutis subtus strigoso- 

 canescentibus. Crevices of rocks on the San Pedro River, July, with old fruit ; and 

 a few flowering specimens were gathered on the return in November. (Sparingly 

 distributed as No. 228\) Fine fruiting specimens have also come to hand since our 



VOL. III. ART. 5. — 11. 



