Oedhb 18.— PEIMUIiAOISiB. 601 



1 B. tenas "WiUd. Clnstera and Iva. beneath silky-femtginous ; his. wedge-oblong 

 or obovate, obtuse, attenuated to the slender petiole ; ditsiers 20 to ib-flowered, 

 pedicels 3 to 5 times longer than the flowers, longer than the petioles ; cor. and 

 appendages exceeding the calyx ; drupe oval. — Dry sandy soils, S. Car. to Fla. 

 and La. Tree 20 to 30f high, with tough twigs (as all the rest have). Spines 

 stout, 6 to 12' long. Lvs. 2 to 3' long, 5 to 8" wide, shining, rusty or tawny but 

 glistening beneath. Drupe beautifully corrugated when dry. Jn., JL 



2 B. lanugindsa Pera. Lvs. oval-lanceolate varying to obovate, membranous 

 wooliy ferruginous beneath, obtuse or rather acute ; fascicles few (6 to l2)-fiow- 

 ered, pedicels short, but as long as, or longer than the petioles, both woolly ; dmpe 

 globular. — Wet soils, S. 111. to Car. and La. Shrub 8 to 12f high, with spreading, 

 spiny branches. Lvs. 18" to 3' long, woolly, not silky beneath. Pedicels 2 to 4' 

 long. Jn., Jl. — Tariable. (B. tomentosa DC, B. oblongifolia Nutt.) 



3 B. lycioidea Gaert. Glabrous, or nearly so ; lvs. wedge-elliptical, rather acute, 

 attenuated to the slender petiole ; clusters densely (20 to 30)-flowered ; pedicels 

 twice longer than the fis. but rather shorter than the petioles ; cor. near twice longer 

 than the cal. — Damp soils, Ky., N. Car. to La. A small tree with the branches 

 nearly straight. Spines on the older branches short, stout. Lvs. including the 

 petiole 2 to 3' long, pedicels 3", fl. 1", greenish-white. May, Jn. 



4 B. reolindta Vent. Glabrous; branches divaricate; lvs. obovate, obtuse, small, 

 narrowed to a short petiole; clusters 15 to 20-flowered ; pedicels slender, half as 

 long as the leaf; cor. twice as long as the calyx. — Rivers banks. Car. to Fla. A 

 straggling shrub. Lvs. scarcely 1' long. Jn., Jl. 



Order LXXVEI. PKIMULACILE. Primworts. 



Herbs low, with the loaves mostly radical or mostly opposite, with the flowers 5- 

 (tarely 4 to 6)-parted, regular and monopetalous, the sta/mens 5, inserted on tha 

 corolla tube and opposite to its lobes, the ovary one-celled, with a free central pla- 

 centa, style 1, stigma 1, the capsule 1-celled, oo-seeded; seeds with fleshy albumen. 



G&nera 80, species 216, common in the northern temperate regions, growing in swamps, groves 

 by rivulets, and often among the snow of "cloud-capped mountains." Many are beaut{f\il and 

 highly prized in culture. Properties unimportant. 



TRIBES AND GENERA. 



I. IIoTTONrE.E. Ovary superior. Capsule opening by valves. Leaves pectinate. IIottonia. . 1 

 Jl. PalMULKiE. Ovary superior. Capsule opening by valves. Leaves undivided. (*) 



* Acaulescent. — Corolla lobes spreading, tube cylindrical PKiMtn,*. 2 



— Corolla lobes spreading, tube ovoid Androsace. 8 



— Corolla lobes reflexed. — Stamens exerted Dodecathkon. 4 



— Stamens included Cyclamen. 5 



• Caulescent— Corolla wanting. Leaves opposite : Glaux. 6 



-rCorolIa 7-parted. Leaves in one whorl Tribntaus. T 



— Corolla 6-parted. Leaves opposite Naumbeegia. 8 



■ — Corolla 5-parted. Leaves opposite or whorled Lysimacuia. 9 



in. Anagallidea Ovary superior. Pyxis opening by a lid.— Tlowers 5-parted.. ..Anagallis. 10 



— Flowers4-partcd.CENTENCULCS. 11 



IV. Bauole^. Ovary half inferior. Leaves alternate. Flowers 6-parted Samolus. lU 



1. HOTTO'NIA, L. Water-feathbr. (To Petei- Ilotfon, professor 

 in the University of Leydcn. Died 1709.) Caly-x 5-parted ; corolla 

 salver-form, with a sliort tube, and a flat, 5-lobed limb ; stamens in- 

 serted in the tube of the corolla, included ; stigma globous ; capsule 

 globous-acuminate. — 2f Fleshy, aquatic herbs, with pectinate-pinnatifid, 

 submersed, radical lvs. 



H. inflata Ell. Water-feathbr. Scape articulate, the intemodes and lower 

 parts inflated ; fls. verticillate, pedunculate. — A curious aquatic plant in swamps 

 and stagnant waters, Mass., R. I. and Ot., K. Y. to Fla. and La. Stem immersed, 

 round, thick, spongy, with a whorl of finely pectinate leaves (1 to 2' long) at or 

 near the surface of the water. Peduncles or scapes several together arising in a 



