410 DIADELPH1A DECANDRIA 



Plant hoary-vlllose. Root perennial, of numerous very long coarse fibres. Stems 

 mostly numerous from the root, 9 to 12 or 13 inches high, rather erect, simple, her. 

 baceous. Leaflets about an inch long, and 1 fourth to 1 third of an inch wide, the 

 terminal one more or less obovatc, or cuneate, all on very short petioles; common 

 petiole 2 to 4 inches long, pinnated to the base ; stipules near half an inch long, 

 aubulate-linear, deciduous. Floxccrs large, in a compact terminal raceme I to 2 

 inches in length ; pedicel$ 1 fourth to near half an inch long, with lance*linear 

 deciduous bracts at base,— mostly 2 or 3 flowers, on longer pedicels, in the axils of 

 the upper leaves. Calyx very villosc ; segments lanceolate, with a subulate acu. 

 mination. Corolla ochroleucous, with strong tinges of purple, especially on the 

 Wings. Style curved upwards, pubescent along the upper side. Legume an inch 

 and half to 2 inches long, and 2 to 4 lines wide, sublinear, falcately recurved) 

 very villose, pointed with the persistent style. 



Hub. Dry, hilly woodlands; Valley hills: frequent. Ft. June-July. Fr. Sept. 



Obs. This handsome plant is rather abundant on the Great Valley hills— par- 

 ticularly on the South hills, or Mica-slate range ; but seems to be pretty much 

 confined to such soils. The infusion of the root is a popular vermifuge. Thret 

 or four additional species have been found in the Southern States of this Union. 



340. ROBINIA. L. JVutt. Gen. 620. 

 [Dedicated to John and Vespasian Robin ; French Botanists.] 



Calyx subcampanulate, 5-cleft, the 2 upper segments approximate. 

 Vexillum large, smooth, spreading or reflcxed ; keel obtuse. Legume 

 compressed, many-seeded, the upper or seed-bearing suture margined, 



I. R. Pseud-acacia, L. Leaves odd-pinnate ; leaflets oblong-ovate; 

 stipules spinosc ; racemes loose, pendulous ; legumes smooth. Heck, 

 Hot. p. 82. Icon, Mr. f. Sylva, 2. tab. 76. 



False-Acacia Rohixia. Yulgo — Locust Tree. 



A Tree, 20 to 30 or GO feet high, and 1 to 2 feet in diameter at base. Leaflets 3 

 or 4 to S or 9 pairs, I to near 2 inches long, and half an inch to near an inch wide, 

 more or less ovate, often nearly elliptic, obtuse, mostly emarginate, slightly mu« 

 cronate, minutely pubescent, on short petioles, each mostly with a small subulate 

 rigid stipule at base (the terminal leaflet with turo stipules) ; common petioles 3 tn 

 6 or 8 inches long, pinnate nearly to the base ; stipules 2 stout sharp spines 1 third 

 to 2 thirds of an inch long. Racemes axillary, simple, pendulous, 3 to 5 inchei 

 long ; pedicels 1 third of an inch long, articulated near the flower. Calyx pubes- 

 cent; segments ovate, mulic,— the 2 upper ones cohering, resembling one broad 

 emarginate segment. Corolla white. Style bearded at and near the summit. Le- 

 gume an inch and half to 3 inches long, and about half an inch wide, veined, 

 amoothish ; valves flat, margined along the upper suture. 



Hub. Meadows ; fence-rows, <fcc. frequent. Ft. May—June. Fr. September. 



06*. This tree,— though frequent here, and very abundant on the Mountains,— 

 has never appeared to me like an indigenous plant in this County. The timber 

 is very valuable, and celebrated for its durability. The flowers are fragrant ; and 

 the tree is often planted about houses. Two other species occur in the U, States, 

 both of which are to be met with under cultivation, here;— the It. hiapida, as an 

 ornamental flowering shrub, and the R. viscosa, occasionally as a shade tree:— 

 but neither of them can be considered as naturalized in the County. 



