258 ORDER 95. CONVOLVULACE^E. 



3 P. cter alcuiii. Tall, with erect branches ; leaflets 1117, pointed ; fls. erect ; seedi 

 CO . Swamps, Yt., 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 dehiscencc transverse. 

 (Japs. 3-cellcd, co-seeded. |^. Prostrate, with densely imbricated, entire 

 leaves and solitary terminal flowers. 



DIAPKNSIA jwoper. Anthers without awns. Flowers pedicellate No. 1 



PYXIDANTHERA. Anthers with the lower valve awned. Flowers sessile No. 3 



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



and the tiny white fln. raised on pedicels V long. White Mountains. 2 3'. July. 



2 D. ba.rbula.ta Ell. Prostrate, creeping, forming dense beds, with short branches ; 



flowers terminal, sessile ; anth. t-hort-awned at base. Barrens, N. J., and S. 3-6'. Jn. 



ORDER XCV. CONVOLVULACE^E. BINDWEEDS. 



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

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

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

 lobcd, 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. 



II L CUSCUTINE/B. Leafless, twining, orange-yellow parasites CUSCUTA. 11 



II. TMCHONDREvE. Leafy. 2 distinct ovaries with 2 distinct styles DICHONDRA. 10 



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

 a Styles united into one. . .(b) 

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



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



Stamens included. Flowers large BATATAS. 



b Ovary and pod 3-celled. Stigma capitate, granulate Pu AEBITIS. 3 



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



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



e Stamens exserted CALONYCTION. 6 



d Stigmas 2, x ovate, flattened. S. Fla JACO.UKMONTIA violacea, 



x linear-terete. Calyx not bracted CONVOLVULUS. 6 



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



e Styles earh bifid. Peduncle very short F.VCLVULUS. 8 



z Styles eacli simple. Peduncles longer than the leaves STVLISHA. 9 



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

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

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



1 Q. rnlgaris Choisy. Cyf>re#s-vine. Lvs. pinnatifid to the mid vein, egm. linear, 



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

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



2 Q eocciiiea Mcench. Leaves cordate, acuminate, entire or angular at base ; pod. 



3!ongatecl. about 5-nowered ; calyx awned; flowers light scarlet, I'.mb nearly entire 

 rf" broad, (i; Along rivers S. and \V. June Aug t 



