Order 78.— PEIMULACK^E. 501 



1 B. tenax Willd. Clusters and lvs. bonoath silhj-ferruginous ; lvs. wedge-oblong 

 or obovate, obtuse, attenuated to the slender petiole ; clusters 20 to 'ib-floweixd, 

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

 appendages exceeding the calyx ; drupo oval. — Dry sandy Boils, S. Car. to Fla. 

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

 Btout, 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. lanuginosa Pers. Lvs. oval-lanceolate varying to obovate, membranous 

 woolly ferruginous beneath, obtuse or rather acute ; fascicles few (6 to \T\-ficw~ 

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

 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. — Variable. (B. tomeiitosa DC., B. oblongifolia Nutt.) 



3 B. lycioides Gaert. Glabrous, or nearly so ; lvs. icedge-elliptical, rather acute, 

 attenuated to the slender petiole ; clusters densely (20 to o0)-fiowered ; ridicela 

 twice longer than the fls. 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 tho older branches short, stout. Lvs. including the 

 petiole 2 to 3' long, pedicels 3 ', 11. 1", greenish-white. May, Jn. 



4 B. reclinata 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 tho calyx. — Rivers banks, Car. to Fla. A 

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



Order LXXVIII. PRIMULACE^E. Primworts. 



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

 (rarely 4 to 0)-parted, regular and monopetalous, tho stamens 5, inserted on tho 

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

 centa, style 1 , stigma 1, tho capsule 1-celled, CC-seeded ; seeds with fleshy albumen. 



Genera 30, specie* 210, common in the northern temperate region's, growing in swamps, groves 

 by rivulets, and often among the snow of '-cloud-capped mountains." Many are beautiful and 

 highly prized in culture. Properties unimportant. 



TRICES AND GENERA. 

 I. IIottoxie.e. Ovary superior. Capsule opening by valves. Leaves pectinate. Hottonia.. t 

 LI. Peimulr.s. Ovary superior. Capsule opening by valves. Leaves undivided. (*) 



* Acquiescent Corolla lobes spreading, tube cylindrical Pkimula. 2 



— Corolla lobes spreading, tube ovoid Andkosace. 3 



— Corolla lobes reflexed. — Stamens exerted Dodecatiieon. 4 



— Stamens included Cyclamen. 5 



* Caulescent. — Corolla wanting. Leaves opposite : Glaus. 6 



— Corolla 7-parted. Leaves in one whorl Tkientalis. T 



— Corolla C-parted. Leaves opposite Naumeeugia. 3 



— Corolla 5-parted. Leaves opposite or whorled Lysimachia. 'J 



ITI. ANAGALLIDE.E. Ovary superior. Pyxis opening by a lid. — Flowers 5-parted Anauallis. 10 



— Flowers 4-partcd.(.'ENTENCi'i.i'S. It 



IV. Samole.e. Ovary half inferior. Leaves alternate. Flowers 5-parted Samolls. 12 



1. HOTTO'NIA, L. Water-feather. (To Peter Jlotton, professor 

 in the University of Leyclen. Died 1709.) Calyx 5-parted; corolla 

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

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

 globous-acuminatc. — 2£ Fleshy, aquatic herbs, with pectinate-pinnatifid, 

 submersed, radical lvs. 



H. inflata Ell. "Water-feather. Scape articnlate, tho internodes and lower 

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

 and stagnant waters, Mass., R. I. and Ct , N. 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 cf the water. Peduncles or scapes several together arising in a 



