KEY. 179 



cells l-seeded. Peduncles 1-, or about 5-flowered. Corolla 

 red or crimson. Leaves cordate, or pinnatitid. 



Quamoclit. 

 Stamens included 404 



404. Stigmas 2, linear, often revolute. Corolla bell- 

 shaped. Pod 2-celled, the cells 2-seeded. Stems twining, or 

 pcorumbent. Leaves ovate-oblong, arrow-shaped. Pedun- 

 cles usually 1-flowered. Corolla white, or tinged with red. 



Convolvulus arvensis, L. 

 Stigma capitate, often 2- to 3-lobed. Corolla bell- 

 shaped, white or purple. Pod 2- to 3-celled, cells 2-seeded. 

 Leaves heart-shaped, fiddle-shaped, sometimes 3-lobed. Pe- 

 duncles 1- to 5-flowered. 



Ipomoea (including Pharbitis, Choisy). 



405. (393.) Leaves connected by stipules 406 



Leaves not connected by stipules 407 



406. Corolla narrowly funnel-form, 4 times longer than 

 the calyx, crimson outside, yellowish within. Style 1. Pod 

 twin, the 2 cells few-seeded. Flowers large, spiked in 

 1-sided cymes. Leaves sessile, ovate, or lanceolate, acute. 



Spigelia Marilandica, L. 

 Corolla tubular, short, hairy in the throat. Ovary 

 (and pod) mitre-shaped, or 2-beaked, the 2 short styles sepa- 

 rate below, but at first united at the summit. Seeds many. 

 Flowers small, white, spiked along one side of a terminal, 

 stalked cyme. Leaves petioled, thin, oblong-lanceolate. 



Mitreola petiolata, Toir. & Gr. 



407. Calyx of 5 sepals. Anther-cells opening by an ob- 

 liquely transverse line. Flowers w^hite, peduncled, 3-bract- 

 ed under the calyx. Low evergreens, occurring in convex 

 tufts. Diapensia Lapponica, I^. 



Calyx 5-cleft, or parted. Anther-cells opening 

 lengthwise 408 



408. Style 3-lobed. Calyx narrow, somewhat prismatic, 

 plaited or angled. Corolla salver-form, with a long tube. 

 Flowers cymose, terminal, or in the upper axils, pink-]iur- 

 ple, or whitish. Fhlox. 



Style not 3-lobed 409 



