Order 73.— ERICAOELE. 489 



O. arboreum DC. Ohio, Penn., along the Alleghany Mts. to Flor. A fine tree, 

 40 — 50f high, trunk 10 — 15' diam. Bark thick and deeply furrowed. Leaves 4 

 — 5' by 1\ — 2', villous when young, at length smooth, with a distinctly acid taste. 

 Flowers white, 3" long. Capsule pyramidal, 5-sided. June, July, f 



i3. MENZIESIA, Smith. (To Menzies, the discoverer of the original 

 species (M. ferruginea) in Oregon.) Calyx deeply 4 or 5-cleft ; corolla 

 urceolate or campanulate, 4 or 5-lobed ; stamens 8 to 10, anthers open- 

 in<r by terminal pores; capsule 4 to 5-celled, the dissepiments made 

 by the introflexed margins of the valves; seeds many. — Low, shrubby 

 plants, of various habits. Fls. in terminal clusters. 



§ PiiYLionocE, Salisb. Leaves evergreen, heath-like. Flowers 5-parted No. 1 



| Menziesa proper. Leaves deciduous. Flowers 4-parted No. 2 



1 M. taxifolia Bobbins. Mountain Heatil St. prostrate at base ; lvs. linear, 

 obtuse, with minute, cartilaginous teeth; ped. terminal, aggregate, 1-flowered; 

 fls. campanulate, decandrous,- cal. acute. — Shoresof tho " lake" on the White Mts. 

 N. H 1 on Mt. Katahdin, Me. It resembles a heath in its flowers; and some of 

 the fir tribes in its leaves and stems. St. decumbent at base, 6 to 10' long, with 

 crowded lvs. above which are 5 to 1" in length. Fls. drooping, purple, at the top 

 of the highest branch, the colored ped. 18'' in length. Fr. erect Jn. 



2 M. ferruginea Smith. /3. globularis Sims. Brandies and pedicels with scat- 

 tered hairs; lvs. oval-lanceolate, ciliate above anl on the veins beneath; apex 

 tipped with a gland; fls. in terminal panicles, nodding on the slender pedieeis. 

 — Mts. Penn. to Car. abuudaut near Winchester, Va. (Pursh). Shrub 4f high. 

 Fls. greenish purple, small, one on each pedicel which is glandular pubescent, 

 18" long. Cor. short-urccolate. Jn. 



14. LQISELEITRIA, Desv. Alpine Azalea, (To Loisdeur Delong- 

 champs, a French botanist.) Calyx 5-partcd, lobes equal ; corolla sub- 

 campanulate, 5-parted, regular; stamens 5, equal, erect, shorter than 

 the corolla, anthers dehiscing laterally from the apex ; ovary roundish ; 

 style straight, included; capsule 2 to 3-celled, 2 to 3-valved, many- 

 seeded. — A little, branching, procumbent shrub, with opposite, pctiolatc, 

 overgreen, entire lvs. Pedicels terminal, solitary, 1 -flowered. Cor. rose 

 color, (Azalea, L.) 



Ii. procumbens Desv. Summit of the White Mts., N. IL Sts. 3 to 6' long, very 

 branching and leafy. Lvs. elliptical, thick, shining, not more than 3" by 1", 

 margins strongly revolute. Fls. glabrous, on very short, purple pedicels, in the 

 midst of the lvs. Jn., JL 



15. AZA V LEA, L. Swamp Pink. (Gr. d^aXto^ arid; perhaps tho 

 original species grows in dry places.) Calyx small, 5-parted, corolla 

 i'unnel-form, somewhat irregular, with 5 spreading lobes ; stamens 5, 

 filaments and style long, exserted, declined, anthers opening by pores ; 

 capsule 5-celled, 5-valved, os-sccded. — Erect shrubs. Lvs. alternate, 

 deciduous, oblong or obovate, entire. Fls. in umbeled clusters, termi- 

 nal, large and showy, (Rhododendron, Don.) 



§ Calyx lebes all <or rarely one excepted) very short or minute. Nos. 1, 2 



§ Calyx lubes all oblong and ol' conspicuous length Nos. 3, 4 



1 A. viscosa L. Branchlets hispid ; lvs. obovate, oblong or lanceolate, the edges, 

 midvein and petiole bristly; fls. appearing with the advii lvs. very viscid, the tube 

 ■much longer than the segments ; stam. exserted ; style much longer. — Moist woods. 

 Can. to Ga. and Ky. Shrub 4 to 7 f high, with spreading branches. Lvs. 1 to 2' 

 long, often glaucous. Fls. fragrant, white or rose color, with full grown lvs. Cal. 

 very small. Tube about 1' long, downy and clammy, slender. May — Jl. (A. 

 glauca Ph.) 



]9. nitida. Lvs. shining above, smooth both sides, green, oblanceolate. — A 

 low shrub in mountain swamps. CaL segno, obsolete 



