JASMINACE5:. 311 PEBIPLOCA, 



2. ACERA'TES. 

 Calyx small; corolla reflexed ; corona of 5 distinct leaflets, 

 without horns, leaflets concave, appressed to the angles of the 

 antheridium ; pollinia 5 pairs, pendulous; follicles smooth. 



Gr. (*, privative, x£gaT£s, horns ; alluding to the absence of the horns which 

 are found in the corona of analogous genera. Herbs. Lvs. opposite. Fls. 

 in umbels. Cor. 3 or 4 times as long as the calyx, abruptly reflexed from the 

 base of the seg. of corona. Seg. of corona truncate at apex, erect, the margin 

 writh 2 short teeth opposite the antheridium and alternate with 5 small proces- 

 ses at base. 



1. A. LANCEOLA'TA. Ell. A. viridiflora. /3. lanceolata. Gn'.tf. Asclepias Ian. i. 

 Stem decumbent, hirsute ; leaves opposite, lanceolate, acute, sessile, hirsute ; 



umbels lateral, solitary, sessile, nodding, dense, subglobose. Dry, sandy 

 plains. Stem 2 — 3 feet long, branching at base. Leaves 4 — 8 inches long 

 ^ — f inch wide, tapering to a long acumination, scarcely petiolate. Flowers 

 green, in one or more axillary umbels. July. Per. 



2. A. VIRIDIFLO'ra. EU. Asclepias viridiflora. 

 Stem simple, erect, hirsute ; leaves oblong, obtuse, on short petioles, 



tomentose-pubescent on both sides ; uvibels lateral, solitary, dense, globose, 

 on short peduncles, nodding; ^€</ice/s tomentose. Dry fields. Stem 2 feet 

 high, covered with dense, close luiirs. Leaves thick, 2 — 3 inches long, 1 — 2^ 

 inches wide, varying from ovate to obovate, mucronate, often retiise. 

 Flowers small, green, inelegant, in 2 or 3 small, subglobose umbels. Follicles 

 downy. July. Per. Green-fiowered SUIaoeed. 



3. PERIPLO'CA. 

 Calyx minute ; corolla rolate, flat, 5-parted, orifice sur- 

 rounded by a 5-cleft, urceolate corona terminating in 5 

 filiform awns ; filaments distinct, anthers cohering, bearded 

 on the back; pollinia solitary, 4-lobed ; follicles 2, smooth, 

 divaricate ; seeds comose. 



Gr. TTigi, around, TrXiyx-i) ; a binding or twining; from the habit of the 

 plant. I'wining shrubs or herbs. Fls. in umbels or cymes. Pollinia dilated 

 at the apex and united to the corpuscles of the stigma, each composed of 4 

 confluent grains. 



P. GR.ECA, 



Leaves ovate, acuminate ; corymbs axillary ; corolla villous within. A 

 climbing shrub, 10 — 15 feet long, sparingly naturalized in Western, N. Y., 

 also cultivated in gardens. Leaves opposite, 3 — 4 inches long, i as wide, and 

 on petioles ^ inch long. Flowers in long, branching, axillary peduncles. 

 Sepals minute, lanceolate, acute. Petals very hairy within, linear, obtuse, 

 dark purple. Follicles about 2 inches long. Aug. 



ORDER CV. JASMINACE^. The Jessamine Tribe. 



Cal. — Divided or tootlied, persistent. 



Cor. — Regular, hypocrateriform, limb in 5 — 8 divisions, iwisted-imbricate in reslivalion. 



fStn. — 2, arising from the corolla and included within its tube. 



Oi-a. — Free, 2-celled, each cell with 1 erect ovule. Style 1. Stigina 2-lobed. 



Fr. — Either a double berry, or a capsule separable into 2. Seeds 2. 



