696 SUPPLEMENT.—CUCURBITACEiE. 



unknown. — An erect glabrous herb, armed with small uncinate prickles along the 

 petioles and peduncles. Stipules subulate. Leaves bipinnate ; the pinnse 5-6 

 pairs; the leaflets numerous, oblong, mucronate, distinctly and singularly reticu- 

 lated beneath with a few elevated anastomosing nerves. Peduncles axillary, an 

 inch and a half long, solitary. Head globose. Flowers while. — " L. Nuttallii. 

 — Arkansas, Nuttall, (in herb. Mercier.)" DC — The plant thus described (after 

 the publication of the second volume of tiie Prodromus,) is indicated either as age. 

 nus, or as a section of either Desmanthus or Schrankia, according as the fruit, 

 when known, shall warrant. The plant is wholly unknown to us, and nothing 

 agreeing with the description is to be found either among our specimens of Nut- 

 tail's Arkansas plants, nor in other coUecLions from the same region. From the 

 description of the leaflets, they would seem to resemble those of Schrankia unci- 

 nata. Our Desmanthus Jamesii is not prickly, and the leaflets not reticulated. 



Order ROSACE^E. 



2. PRUNUS, p. 406-408. 



3. P. glandulosa. — On receivinG; the letter-press of tlie 6th part of the 

 Icones Plantariim,'we perceive that Hooker has described this plant under the 

 name o^ Amygdalus glandulosa, doubtless on account of its resemblance ta 

 A. microphylla, H. B. <^" A'., although tlie genus cannot be determined for 

 want of the fruit, and it is not improbable that both plants belong to Prunus. 

 Having examined an original specimen of Amygdalus micropliylla, we may 

 confidently state the Texan plant to be distinct from that species, although it 

 much resembles it. 



Order LOASACEiE. 



2. CEVALLIA, p. 536. 



C. sinuata. — Add syn. Hook, ic.pl. t. 252. (Texas, Berlandier.) The 

 6th part of the Icones Plantarum, in which Hooker has figured this species, 

 reached us after the foregoing sheets were printed. Sir William Hooker 

 adopting the suggestion of Dr. Arnott, is inclined to refer the genus to Thy- 

 meleae; an opinion which these distinguished botanists will probably recon- 

 sider, since they have recently described Gronovia as a Loasaceous plant 

 {Supi^l. hot. Beechey, p. 426), which genus accords with Cevallia in the 

 1-celled ovary, with a single .suspended ovule. Hooker, like ourselves, found 

 the seed destitute of albumen, although both Lagasca and Nuttall have 

 described it otherwise. 



Order CUCURBITACE^. 



4 (a). DISCANTHERA. 



Flowers monoecious. Sterile Fl. Calyx obsolete. Petals 5, ovate, 

 United at the base into a flatfish nearly rotate corolla. Stamens (probably) 

 2 : filaments very short, connate ; the anthers forming a flat peltate disk, 

 opening all round the even continuous margin ; both the superior and the in- 

 ferior surface (within the margin) furnished with a minute ciliate fringe. 

 Disk and rudiment of the ovary none. Fertile Fl. Calyx produced be- 

 yond the ovary into a filiform tube ; the teeth obsolete. Petals nearly as in 



