524 ASCLEPIADE.^, (MILKWEED FAMILY.) 



11. CIONUEA. 21 Tall, erect herbs, shrubby at base; leaves cordate-ovate. 



t t Anthers obtuse at tip, with short appendage or 0, 



12. LEPTADENIA. ^ Leafless shrubs, with aspect of Spartium junceum. 



1 1 1 Anthers obtuse at tip, not appendaged, incumbent over disk or immersed in it. 



13. BOUCEROSIA. 21 Fleshy, leafless herbs, with tetragonal branches and aspect of 



Stapelia. 



1. PERIPLOCA, L. Periploca. Haldb. 



Corolla rotate, with 5, spreading or reflexed lobes, alternating 

 with aristate scales. Filaments free ; anthers bearded at back, adherent 

 at tip, apiculate bej'^ond. cells. Pollen-masses solitary, made up of 4, 

 coherent granules. Follicles terete, smooth — Shrubs, with brownish- 

 green or yellow flowers, 



* Tall shrubs, more or less cUiribing Iry twining of stems. 



1. P. Graeca, L. 5 Leaves opposite, ovate to oblong-lanceo- 

 late, obtuse or acute, .05 to .1 long, glabrous, short-petioled. Cymes 

 terminal, loose; corolla .015 to .02 broad, 'brownish-green, lobes oblong, 

 retuse, bearded at margin; scales of crown 2-auricled, ending in an 

 undivided awn ; follicles somewhat divergent — Spring — Galilee to 

 Leontes Valley, Phoenician plain, Lebanon, Marash, and northward and 

 eastward. 



Var. otolongifolia, Post. Leaves oblong to oblong-lanceolate, 

 acuminate — Abeih (Lebanon). 



2. P. laevigata, Ait. 5 Branches short, rigid, the upper only 

 twining. Leaves opposite or clustered, nearly sessile, oblong to 

 elliptico-linear, obtuse or acute, much smaller than in the last, gla- 

 brous, nearly sessile. Cymes terminal, few-flowered, shorter than leaves; 

 corolla .005 to .008 broad, yellow, glabrous, execpt an ovate, woolly spot 

 near middle of obtuse or retuse lobes ; scales of crown 2-auricled, 

 ending in a simple awn ; follicles horizontal — Spring — Lattakia. 



jf. * 



almost leafless shrubs, not ticinmg or climbing. 



3. P. apliylla, Dec. 5 1 to 2; branches long, often pendulous, 

 naked, resembling those of Spartium junceum, velvety-canescent while 

 young, then glabrous. Leaves few, .002 to .003 long, ovate, canesceut, 

 mucronulato, nearly sessile. Cymes in axils of abortive leaves, nearly' 

 sessile, densely flowered; corolla brownish-purple, .008 to .01 broad, 

 lobes ovate, obtuse or retuse, concave, bearded along upper half of 

 margin; scales 2-auricled, ending in a simple awn; follicles velvety, 

 then glabrous, tapering, horizontal — Spring — Shittim plain. 



2. OL.O§§OjVEMA, Decaisne. Glossonema. 



Calyx 5-parted. Corolla subcampanulate, deeply 5-parted, lobes 

 fleshy above. Crown consisting of 5, flat leaves, adnate to base of co- 

 rolla, tapering at tip into filaments; pollen-masses ovate, pendulous 

 from ascending funicles. Follicles unarmed or spiny — Perennial herbs. 



Cr. SoTeanum, Dec. 2f .3, more or less canescent, branching 

 from base, more or less prostrate. Leaves short-petioled, truncate or 

 cuneate at base, ovate-oblong to laiiceolate or linear, .01 to .03 long, 



