258 ORDER 95. CONVOLVULACE^E. 



2 P. coer itlcum. Tall, with erect branches ; leaflets 1117, pointed ; fls. erect ; seede 

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



6. COBJEA 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 the sinuses 

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

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

 leaves and solitary terminal flowers. 



DIAPENSIA proper. Anthers without awns. Flowers pedicellate No. 1 



PYXIDANTHERA. Anthers with the lower valve awned. Flowers sessile No. 9 



1 D. Lapponica L. A little tufted shrublet, with fleshy, evergreen, obtuse leaves, 



and the tiny white fls>. raised en pedicels 1' long. White Mountains. 2 3'. July. 



2 D. barbulckta Ell. Prostrate, creeping, forming dense beds, with short branches; 



flowers terminal, sessile ; anth. ehort-awiied at base. Barrens, N. J., and S. 3-6'. Jn. 



ORDER XCV. CONVOLVULACE^. BINDWEEDS. 



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

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

 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, Go, 81, 82, 209-10, 262. 



II L CUSCUTINE^E. Leafless, twining, orange-yellow parasites. CCSCUTA. 11 



II. T?ICHONDRE^E. Leafy. 2 distinct ovaries with 2 distinct styles DICHONDRA. 10 



I. OONTOLVULE^E. Leafy. Ovary 1. Capsule dehiscent. Seed-lobes leafy... (a) 

 a Styles united into one...(^>) 

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



b Ovary and pod 4-celled. c Stamens exserted. Flowers small QCAMOCLIT. 1 



c Stamens included. Flowers large BATATAS. 



I Ovary and pod 3-celled. Stigma capitate, granulate PUARBITIS. 3 



b Ovary and pod 2-celled. . . (d) 



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



e Stamens exserted GALON VCTIOX. 5 



d Stigmas 2, x ovate, flattened. S. Fla JACQUKMONTIA rinlatea. 



x linear-terete. Calyx not bracted CONVOLVULUS. 6 



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



e Styles earh bifid. Peduncle very short F.VCLVUI.US. 8 



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



1. QUAMOCLIT, Tourn. CYPRESS- VINE. Sep. 5, mosty mucromite. 

 Cor. tubular-cylindric, with a sal ver-forni border. Sta. exserted. Styie 1, 

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

 1 Q. vulgaris Choisy. Cypress-vine. Lvs. pinnatifld to the midvein, Hegm. linear, 



parallel, acute ; ped. 1-ttwd. ; sep. ovate-lanceolate ; cor. scarlet. An exceedingly 



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

 9 Q. coccinea Mceuch. Leaves cordate, acuminate, entire or angular at base ; ped. 



3longated, about 5-flowered; calyx awned; flowers light scarlet, limb nearly entire 



*" broad. Along rivers S. and W. June Aug. t 



