258 ORDER 95. CONVOLVULACE^E. 



2 P. coeruleum. Tall, with erect branches ; leaflets 1117, pointed ; fls. erect ; eee<t! 

 GO . Swamps, Vt., N. Y., N. J. (Dr. Howe, Prof. Porter). 2 3f. Often cultivated. 



6. COB2EA SCANDENS. Calyx large and leaf-like. Cor. large, throat 

 ample, limb spreading, dull purple. Leaves pinnatisect. ending in a tendril. Coarse 

 climbers, from Mexico. The lower leaf-segments resemble stipules. 



7. DIAPENSIA, L. Cal. of 5 oval sepals, closely subtended by bracts. 

 Corolla bell-form, imbricated in the bud. Fil. flat, arising from tlae sinuses 

 of the corolla, anth. cells diverging at base and the dehiscence transverse. 

 Caps. 3-celled, co-seeded. Lo Prostrate, with densely imbricated, entire 

 leaves and solitary terminal flowers. 



DIAPENSIA proper. Anthers without awns. Flowers pedicellate No. i 



PYXIDANTHERA. Anthers with the lower valve awned. Flowers sessile No. 2 



1 I>. Lapponlca L. A little tufted shrnblet, with fleshy, evergreen, obtuse leaves 



and the tiny white fls. raised on pedicels 1' long. White Mountains. 2 &. July. 



2 I>. barbulata Ell. Prostrate, creeping, forming dense beds, with short branches 



flowers terminal, sessile ; anth. short-awned at base. Barrens, N. J., and S. 3-C'. Jn. 



ORDER XCV. C.ONVOLVULACE^G. BINDWEEDS. 



Chiefly twining or trailing herbs, sometimes parasitic, sometimes shrubby. 

 Leaves (or scales when leafless) alternate. Flowers regular, peutameroua 

 and 5-androus. Sepals imbricated. Corolla monopetalous, 5-plaited or 

 lobed, convolute in bud. Ovary free, 2-(rarely 3-)celled or falsely 4-celled, 

 or of 2 distinct, 1-ovuled pistils. Capsule 2-6-seeded. Embryo large, coiled 

 in mucilaginous albumen. Figs. 48, 65, 81, 82, 209-10, 262. 



III. CUSCUTJNE^E. Leafless, twining, orange-yellow parasites CUSCUTA. 11 



II. TJICHONDRE^E. Leafy. 2 distinct ovarie with 2 distinct styles DICHOXDRA. 10 



I. OONVOLVULEjE. Leafy. Ovary 1. Capsule dehiscent. Seed-lobes leafy... (a) 

 a Styles united into one. . .(i) 

 i Styles 2 or 3, distinct or nearly BO. Stamens included. . .(z) 



b Ovary and pod 4-celled. c Stamens exserted. Flowers small QUAMOCLIT. i 



t. Stamens included. Flowers large BATATAS. 



6 Ovary and pod 3-celled. Stigma capitate, granulate Pa ABBITIS. 3 



b Ovary and pod 2-celled. . . (<t> 



d Stigma 1, capitate. e Stamens included IPOMIEA. 4 



e Stamens exseited .'.CALORTCTION. 5 



d Stigmas 2, x ovate, flattened. S. f.<\ JACUUKBONTIA cinlacta. 



x linear-terete. Calyx not bracted < 'of VOLVULUS. 6 



x oblong-terete. Calyx in 2 large bracts . .C.U.YSTKGIA. 7 



z Styles ea-.'h bifid. Peduncle very short F.VCLVUI.US. 8 



z Styles each simple. Peduncles longer than the leaves STVMaai.. 9 



1. QUAMOCLIT, Tourn. CYPRESS- VINE. Sep. 5, most y mucrmate. 

 Cor. tubular-cylindric, with a salver-form border. Sta. exserted. Styie 1, 

 stigma capitate, 2-lobed. Ov. 4-celled, cells 1 -seeded, j? From Tropical Am. 



1 Q. viilifitris Choisy. Cypress-vine. Lvs. pinnatifld to the midvein, tc>cm. linear, 



parallel, acute; ped. 1-ttwd. ; eep. ovate-lanceolate; cor. scarlet. (T) An exceedingly 

 delicate vine, in gardens, and often escaped S. July, Aug. 



2 Q. cocciiiea Moeuch. Leaves cordate, acuminate, entire or angular at base; pod 



2iongated, about 5-floweri-d ; calyx awned; flowers light scarlet. 1'inb nearly entire 

 t" broad. (T> Along river** S. and W. June--Aug t 



