220 VACC I N I A C K -fc. 



tudinally. Style straight, included. Capsule 5-celled r 5- 

 valved, opening at the top. 



A. procumbens Linn. : stem procumbent, diffusely branched ; leaves op- 

 posite, elliptic, smooth, revolute on the margin ; stamens included. Loisi- 

 Uuria procumbcns JR. fy S. D. C. 



White Mountains, N. H. N. to Arct. Amer. July. T^. Stem 3 6 inches 

 long, branched, leafy above. Leaves evergreen, thick, obtuse, small. Flowers 

 small, reddish-white, in terminal clusters. Trailing Azalea. 



13.' LEDUM. Linn. Labrador Tea. 

 (From the Greek \riSov, a shrub ; which this resembles.) 



Calyx minute, 5-toothed. Corolla 5-petalled, spreading. 

 Stamens 5 10, exserted. Anthers opening by two terminal 

 pores. Capsule subovate, 5-celled, 5-valved, opening at the 

 base, pedicellate. Seeds numerous, linear, with a membrana- 

 ceous wing at each extremity. 



1. L. latifolium Ait. : leaves elliptic-oblong, revolute on the margin, fer- 

 ruginous tomentose beneath ; stamens 5, as long as the corolla. L. palus- 

 tre var. Latifolium Mich. Torr. 



Sphagnous swamps. Arct. Amer. to Penn. June. An evergreen shrub 

 about 2 feet high and with the stem irregularly branched ; the branches woolly. 

 Leaves alternate, broad-oblong, obtuse. Flowers in terminal corymbs, white. 



Broad-leaved Labrador Tea. 



2. L. palustre Linn. : leaves linear, revolute on the margin, ferruginous 

 tomentose beneath ; stamens 10, longer than the corolla. 



Swamps. Arct. Amer. to Penn. June. A shrub smaller than the last and 

 with narrower leaves. I have found both species in a sphagnous swamp near 

 Fairhaven, Vt. They have both been used as substitutes for tea, but the latter 

 is said to be preferable for this purpose. Narrow-leaved Labrador Tea. 



14. LEIOPHYLLUM. Pm. Sleek Leaf. 



(From the Greek Aao?, smooth, and <J>v\\ov, a leaf; in allusion to its foliage.) 



Calyx deeply 5-parted, persistent. Corolla 5-petalled. Sta- 

 mens 10, longer than the corolla. Anthers lateral, opening on 

 the insi.de longitudinally. Capsule globose, 3-celled, 3-valved, 

 opening at the top. Seeds many, ovate. 



L. buxifolium Ell. : stem erect ; leaves oval or obovate, nearly sessile, 

 alternate ; capsule smooth. Ledum buxifolium Ait. Ammyrsine buxifolium 

 Pursh. 



Pine barrens, N. J. and high mountains, S. Car. May, June. A small ever- 

 green shrub 618 inches high, branching, smooth. Leaves small, entire, smooth, 

 coriaceous, with the margin revolute. Flowers numerous, white, in small ter- 

 minal corymbs. Sleek Leaf. Sand Myrtle. 



ORDER LXXIII. VACCLNIACE^E. CRANBERRIES. 

 Calyx entire, or 4 6-lobed. Corolla with as many lobes as 

 the calyx. Stamens distinct, double the number of the lobes 



