ORDER 78. PBIMULACE^E. 501 



1 B. tenax Willd. Clusters and Ivs. beneath silky-ferruginous ; Ivs. wedge-oblong 

 or obovate, obtuse, attenuated to the slender petiole ; dusters 20 to 35 -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 S" wide, shining, rusty or tawny but 

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



2 B. lamiginosa Pers. Lvs. oval-lanceolate varying to obovate, membranous 

 woolly ferruginous beneath, obtuse or rather acute ; fascicles ftw (6 to I2)-flow" 

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

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

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

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



3 B. lycioides Gaert. Glabrous, or nearly so ; Ivs. wedge-etti'ptical, ratJier acute, 

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

 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 the older branches short, stout. Lvs. including the 

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



4 B. reclinata Vent. Glabrous; branches divaricate; Ivs. 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. Eivers 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 the flowers 5- 

 (rarely 4 to 6)-parted, regular and monopetalous, the stamens 5, inserted on tho 

 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, co-seeded ; seeds with fleshy albumen. 



Genera 30, 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 beautiful and 

 highly prized in culture. Properties unimportant. 



TRIBES AND GENERA, 

 I. HOTTONIEJS. Ovary superior. Capsule opening by valves. Leaves pectinate. HOTTONIA.. 1 



II. PKIMULE.E. Ovary superior. Capsule opening by valves. Leaves undivided. (*) 



* Acaulescent. Corolla lobes spreading, tube cylindrical PKIMITLA. 2 



Corolla lobes spread ing, tube ovoid ANDROSACE. 3 



Corolla lobes reflexed. Stamens exerted DODECATIIEON. 4 



Stamens included CYCLAMEN. 5 



* Caulescent. Corolla wanting. Leaves opposite : GLAUX. 6 



Corolla 7-parted. Leaves in one whorl TKIENTALIS. 1 



Corolla 6- parted. Leaves opposite NAUMBEEGIA. 8 



Corolla 5- parted. Leaves opposite or whorled LYSIMACIIIA. 9 



III. ANAGA LLIDE^E. Ovary superior. Pyxis opening by a lid. Flowers 5-parted....ANAGALLis. 10 



Flowers 4-parted.CENTENCULL'S. 11 



IV. SAMOLE.E. Ovary half inferior. Leaves alternate. Flowers 5-parted SAMOLUS. 12 



| 1. HOTTO'NIA, L. WATER-FEATHER. (To Peter Hotton, professor 

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

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

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

 globous-acuminate. 2 Fleshy, aquatic herbs, with pectinate-pinuatifid, 

 submersed, radical Ivs. 



H. inflata EU. WATER-FEATHER. Scape articulate, the 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 of the water. Peduncles or scapes several together arising in a 



