I 



ERiCACi:^:. (hkatii iamilv.) 321 



Mirhx.) — Woods, mountains of Penn. to Ga. May. Covered just when tlie 

 leaves appear with a profusion of large orange hlossoms, usually turning to 

 flame-color, not fragrant. 



* * Flower-buds of fewer and early caducous scales; corolla irregular, with 

 short or hardly any tube, anteriorly divided to the base ; the limb equalling 

 the 10 stamens and style. 



5. R. Rhodbra, Don. Young parts sparingly strigose-hairy (1-2^ high) ; 

 leaves ohlong, j)ale, more or less puhescent ; corolla hardly T long, purplisli- 

 rose-color, hilahiate, with the posterior lip 3-lohed, the anterior of 2 ohlong- 

 linear and recurving nearly or (juite distinct petals. (Rhodora Canadensis, L.) 



— Cool bogs, Newf. and N. Eug. to mountains of Penn. 



§ 2. RHODODENDRON proper. Leaves coriaceous and persistent ; stamens 

 {commonly 10) and style rarely exserted, somewhat declined, or sometimes 

 equally spreadimj. 



6. R. maximum, L. (Great Laurel.) Leaves 4-10' long, very 

 thick, elliptical-oblong or lance-oblong, acute, narrowed toward the base, very 

 s?noo//«, with somewhat revolute margins ; pedicels viscid ; corolla bell-shaped, 

 r broad, pale rose-color or nearly white, greenish in the throat on the upper 

 side, and spotted with yellow or reddish. — Damp deep woods, rare from Elaine 

 to Ohio, but very common through the Alleghanies from N. Y. to Ga. July. 



— Slirub or tree 6-35° high. 



7. R. Catawbiense, Michx. Leaves oval or oblong, rounded at both ends, 

 smooth, pale beneath (3-5' long); corolla broadly bell-shaped, lilac-purple; 

 pedicels rusty-downy. — High Alleghanies, Va. to Ga. June. Shrub 3-6° 

 (rarely 20°) higli. 



8. R. Lapponicum, Wahl. Dwarf, prostrate in broad tufts (6' high) ; 

 leaves {^' long) elliptical, obtuse, dotted (like the branches) witli rusty scales; 

 umbels few-flowered; corolla open bell-shaped, dotted, violet-purple ; stamens 

 5- 10. — Alpine summits of northern N. Y. and N. Eng., to the Arctic Coast. 

 July. (Arct. Eu. and Asia.) 



17. LEDUM, L. Labrador Tea. 



Calyx 5-toothed, very small. Corolla of 5 obovate and spreading distinct 

 petals. Stamens 5 - 10 ; anthers opening by terminal pores. Capsule 5-celled, 

 splitting from the base upward, many-seeded ; placentie borne on the summit 

 of the columella. — Low slirubs, witli the alternate entire leaves clothed with 

 rusty wool underneath, persistent, the margins revolute ; herliago slightly fra- 

 grant when bruised. Flowers white, small, in terminal umliel-like clusters 

 from large scaly buds ; bracts or scales thin and caducous. (AtjSoj/, the ancient 

 Greek name of tlie Cistus.) 



1. L. Iatif61ium, Ait. Erect, 1-3^ high; leaves oldong or linear-ob- 

 long (1-2' long), mostly Y wide, very obtuse; stamens 5-7; capsule oblong, 

 acutish. — N. Eng. to Penn., Mich., Minn., and northward, in cold bogs and 

 mountain woods. 



Ij. palijstre, L., with linear leaves, 10 stamens, and short -oval capsule, is 

 found in Newfoundland and northwestward. (Eu.) 



21 



