1?7.S Mil. K \VKKI) FAMILY. 



A. verticillata, WHORLED M. Dry ground, l-^ c high, smoothish ; 

 stems vcrv leafv throughout : leaves very narrow linear or thread-shaped, in 

 \\ horls of 3 - G ; flowers greenish-white. 



2. ACEBATTSS, CUKKN MILKWEED. (Name from the Greek, means 

 wit/tout (i liuru i. i\ none to the hood-like appendages, in which it differs from 

 Asclepias.) l-.ow.-rs green or greenish, in summer. 2/ 



1. Flowers in compact lateral nml<h: corolla witli oblonrj re flexed divisions: 



the ItOOlls creel : y/s s!in<l<r, annutiinis downy, but with tin snr/in-i < rin. 



A. viridiflora. Dry sandy or gravelly soil : soft-downy or smoothish, 

 l-2 high; leaves varying from oval to linear, mostly opposite: globular 

 uniliels nearly sessile ; flowers short-pedicelled, nearly ' long when open; 

 hoods not elevated above the base of the corolla. 



A. longifblia. Low barrens W. & S. : rather hairy or ronghish, l-3 

 i, with very numerous mostly alternate linear leaves, flowers .-mailer and on 

 slender pedicels, the umbel pednneled, hoods elevated on a short ring of fila- 

 ments above the base of the corolla. 



2. Fioicrm i loose terminal awl so/ihiry or corymbed umbels : divisions of the 



corolla lin/e'ij sprtading, Imt t/if lonjc hoods spreading and slipper-shaped: 



jiwlx t/i/rl.-, ufli n irttli sonic sn/'l t/llifl'cle-/ike /ii'ii/ii-t/nns. 



A. paniculata. Dry prairies and barrens from III. S. W. : smoothish, 

 1 high ; leaves alternate, oblong or lance-oblong; flowers 1' broad, green, the 

 hoods purplish. 



3. ENSLENIA. (Named for A. Enslcn, an Austrian traveller.) ^ 



E. albida. River-banks from Ohio S. & W. : climbing, 8 -12 ; smooth, 

 with opposite heart-ovate long-petioled leaves, anil small whitish flowers in 

 raceme-like clusters on axillary peduncles, all late summer. 



4. VINCETOXICUM. (Name is equivalent to Poison Periwinkle.) 2/ 

 V. nigrum, from En. : a low-twining smooth weed, escaping from gardens 



E. ; leaves ovate and lanee-ovatc; flowers small, brown-purple, rather few in 

 axillary umbels, in summer. 



5. GONOLOBUS. (Name in Greek means angled pod.) Ours arc twin- 

 ing herbs, along river-banks, chiefly S., with opposite heart-shaped petioled 

 leaves, and corymbs or umbels of dark or dull-colored small flowers, on pedun- 

 cles between the petioles, in summer. ^ 



G. Isevis. From Virg. to Illinois S. : smooth or only sparingly hairy, the 

 yellowish-green flowers and the longitudinally ribbed pods smooth. 



G. Obliquus. From Penn. S. : hairy, somewhat clammy ; flowers mi- 

 nutely downy outside, long and narrow in the bud, dull crim>on-purple within, 

 the strap-shaped or lanceolate divisions A' long ; pods ribless, wartv. 



G. hirsutUS. From Virginia S. : differs from the last in its short-ovate 

 flower-buds, the oval or ohlung divisions of corolla only about 4' long. 



6. HOYA, WAX-PLANT. (Named for T. /%, an English florist.) 



H. cam6sa, a well-known house-plant from India ; with rooting stems, 

 thick and tie-by oval leaves, umbels of numerous flesh-colored or almost white 

 flowers, the upper surface of corolla clothed with minute papilhr. 



7. STEPHANOTIS. (Name from Greek for crown and car, referring to 



the appendages of the stamens.) 



S. floriblinda, from .Madagascar : a fine hot-house twiner, very smooth, 

 with opposite oval or oblong thickish leaves, and lateral umbels of very showy 

 fragrant flowers, the pure white corolla l' in diameter, the tube 1' long. 



