ORDER LXXIX. ASOLTCPIAPACEjR. 4#1 



1. P. pubes'cens, (Ell.) Stem erect, terete, pubescent. Leaves op- 

 posite, ovate or linear-oblong ; umbels on short peduncle?, few-flower- 

 ed ; flowers rather large. — Yellowish-green. Dry pine-barrens. 12— 

 18 inches. 



Genus ill.— ACER' ATES. Ell. 



(From a, priv., and keras, a horn, the hoods of the crown being destitute of a horn.) 



Calyx 5-parted. Corolla deeply 5-parted ; limb spreading 

 or reflexed. Stamineal crown destitute of horns, 



1. A. viridiflo'ra, (Ell.) Stem erect or ascending, hairy. Leaves 

 oval, ovate or obovate, or lanceolate and nearly linear, thick, on short 

 petioles, tomentose, pubescent. Flowers in sub-globose umbels, nearly 

 sessile. Follicles smooth. — Green. U- July. Sandy fields. 1 — 2 ft. 



Genus IV.— ASCLETIAS. L. 18—5. 

 (The Greek name of JSsculapius.) 



Calyx small, 5-parted. Corolla reflexed, 5-parted. Stami- 

 neal crown 5-leaved ; leaflets opposite the anthers, each pro- 

 ducing from its base a subulate averted process. Stic/ma with 

 5 angles. Pollen in 10 masses, arranged in pairs. Follicles 2. 

 Seeds comose. 



1. A. purpuras'cens, (L.) Stem erect, simple. Leaves ovate, near- 

 ly sessile, nearly glabrous above, downy beneath, purple midrib. 

 Flowers in erect, terminal umbels. Horns of the nectary resupinate.— 

 Purple. If. June — July. In swamps. 3 — 4 feet. 



2. A. piiytolaccoi'des, (Pursh.) Stem erect, simple. Leaves oppo- 

 site, broad-lanceolate, large, acuminate, smooth, pnle beneath. Flowers 

 in lateral and terminal umbels, nodding. — Greenish-purple. 2£ . Juuo 

 — July. Mountains. 2 — i feet. 



3. A. amplexicau'lis, (Mich.) Stem, decumbent, terete. Leaves lar^e, 

 succulent, sessile, opposite, cordate, strongly veined. Flowers in axilla- 

 ry and terminal umbels. Horns of the nectary exserted. — Dull white. 

 11. April — May. Dry sandy soils. 1 — 2 feet. 



4. A. obtusifo'lia, (Mich.) Stem simple, erect, purple. Leaves ses- 

 sile, opposite, cordate, ovate, undulate, glabrous, glaucous beneath. 

 F.owfrs in terminal umbels, usually solitary, on long peduncles. Co- 

 rolla large, tinged with purple and green. Horns of the nectary ex- 

 serted. — Purple and white. 2£. June — July. Sandy soils. 2 — 3 ft. 



5. A. variega'ta, (L.) Stem erect, simple, terete, with 2 pubescent 

 lines. Leaves opposite, oval-lanceolate, undulate, glabrous beneath, 

 veins and margins pubescent. Flowers in terminal umbels, with the 

 peduncles and pedicels pubescent, with a caducous bract at the ba.-e of 

 each pedicel. Calyx hairy, reflexed, with subulate segments. Corolla 

 glabrous, green on the outer surface; follicle lanceolate, smooth.— 

 White. U . April — June. In rich soils. Common. 2 — 3 feet. 



6. A. quadrifo'lia, (Muhl.) Stem erect, simple, smooth. Leaves ver- 

 tic'dlate by fours, ovate- lanceolate, glabrous, acuminate on short petioles. 

 Flowers in terminal and axillary umbels; pedicels capillary ; nectaries 

 ■with, horns, 2-toothed. — White. %* June — July. Dry woods. 2—8 ft. 



