CLASS X. ORDER I. 179 



underneath. Both leaves and petioles, when young are cov- 

 ered with a light woolly substance. The flowers form a ter- 

 minal cluster or thyrsus immediately above the leaves, the 

 stalks and calyxes of which are covered with a glutinous pubes- 

 cence. Previous to its expansion, the whole bud forms a large 

 compound bud, resembling a strobilus or cone, each individual 

 flower-bud being covered by a rhoinbodial bracte, which falls 

 otf when the flower expands. Calyx small, of five unequal ob- 

 tuse segments. Corolla monopetalous, funnel shaped, with a 

 short tube, the border divided into five large, unequal segments, 

 which are white shaded with lake, the upper and largest having a 

 collection of orange colored spots at its centre. Stamens decli- 

 nate, unequal ; filaments white, thickened and hairy at base; 

 anthers two celled, opening by two pores at lop ; pollen white. 

 Germ ovate, hairy, glutinous; style declinate, equal to the long- 

 est stamens, thickened upwards ; stigma a rough surface with 

 five points. Capsule ovate, obtusely angular, five celled. Seeds 

 numerous, minute. — In a swamp at Medfield, also near Portland. 

 —July. 



1S6. KALMIA. 

 Kalmia latifolia. Mou7itain Laurel. 



American Medical Botany, PI. xiii. 



Leaves scattered, petioled, oval, and smooth ; co- 

 rymbs terminal, viscid and pubescent. 



A large and very ornamental shrub, sometimes attaining to the 

 altitude of a small tree. Its leaves are evergreen, coriaceous, 

 very smooth, with the under side somewhat palest. Their form 

 is oval, acute and entire ; their insertion by scattered petioles, 

 on the sides and extremities of the branches. The flowers vary 

 from white to red ; they grow in terminal corymbs, simple or 

 compound with opposite branches, and made up of slender pe- 

 duncles. These are invested with a glutinous pubescence, and 

 supported at base by ovate, acuminate bractes. The calyx is 

 small, five parted, persistent, with oval, acute segments. The 

 corolla is monopetalous, with a cylindrical tube, a spreading disc, 

 and an erect, five cleft margin. At the circumference of the disc, 

 on the inside, are ten depressions or pits, accompanied with cor- 



