40 NORTH AMERICAN FLORA [VoLuME 29 
5. CLADOTHAMNUS Bong. Mém. Acad. St.-Pétersb. 
VI. 2: 155. 1832. 
Tolmiea Hook. Fl. Bor. Am 2: 44. 1834. 
Shrubs with erect branching stems. Leaves alternate, often approximate on twigs; 
blades relatively narrow, thinnish, entire, with obscure alternate lateral veins, petioled. 
Flowers perfect, solitary in the leaf-axils or few together in corymb-like clusters. Calyx 
rotate; lobes 5, narrow, many times longer than the tube. Corolla red or salmon-colored; 
petals narrow, sometimes slightly broadest above the middle or below it, mostly spreading in 
anthesis. Stamens 10, ascending or spreading, shorter than the petals; filaments subulate or 
lanceolate; anthers oblong or oval, much shorter than the filaments. Ovary 5- or 6-celled, 
lobed, depressed; style elongate, declined and strongly curved, enlarged at the apex; stigma 
capitate-discoid, somewhat lobed. Capsule depressed, 5- or 6-lobed, 5- or 6-valved, septicidal. 
Type species, Cladothamnus pyrolaeflorus Bong. 
1. Cladothamnus pyrolaeflorus Bong. Mém. Acad. 
St.-Pétersb. VI. 2: 155. 1832. 
Tolmiea occidentalis Hook. Fl. Bor. Am. 2: 44. 1834. 
A shrub with glabrous or puberulent angled twigs; leaf-blades spatulate to oblong, 1-4 
em. long, rounded or abruptly short-pointed, glabrous or ciliolate, at least when young, much 
paler-green beneath than above, obscurely veined; flowers erect or ascending from drooping 
buds, slender-pedicelled; calyx about 2 cm. broad, the lobes linear or nearly so, often ciliolate, 
especially near the base; petals oblong to oblong-spatulate, 11-15 mm. long; stamens 7-9 mm. 
long; style about 10 mm. long; capsules spheroidal, 6-8 mm. wide. 
TYPE LOCALITY: Sitka. 
Disrrisution: Alaska to British Columbia and Oregon. 
ILLUSTRATIONS: Mém. Acad. St.-Pétersb. VI. 2: pl. 1; Garden & Forest 10: f. 27. 
6. LOISELEURIA Desv. Jour. Bot. Desv. II. 1: 35. 1813. 
Chamaecistus S. F. Gray, Nat. Arr. Brit. Pl. 2: 401. 1821. 
Chamaeledon Link, Enum. 1: 210. 1821. 
Shrubs with low often prostrate branches. Leaves opposite or sometimes alternate, 
usually approximate or crowded; blades thick-leathery, entire, revolute, with a very thick 
midrib, petioled. Flowers few together in terminal umbel-like clusters, short-pedicelled. 
Calyx persistent; lobes 5, rather narrow, much longer than the tube. Corolla broadly cam- 
panulate, white to deep-pink, deciduous; lobes relatively broad, about as long as the tube, 
somewhat spreading. Stamens 5, included, much shorter than the corolla; filaments subulate, 
glabrous; anthers globular-didymous, opening lengthwise, often purplish. Ovary 2- or 3- 
celled, seated on a disk; style short, columnar; stigma truncate or obscurely lobed. Capsule of 
an ovoid or conic type, clasped by the calyx, 2- or 3-valved from the apex, the valves ultimately 
cleft. 
Type species, Azalea procumbens L. 
1. Loiseleuria procumbens (1.) Desv. Jour. Bot. 
Desv. II. 1: 35. 1813. 
Azalea procumbens L. Sp. Pl. 151. 1753. : 
reese Mee serpyllifolia S. F. Gray, Nat. Arr. Brit. Pl. 2: 401. 1821. 
Chamaeledon procumbens Link, Enum. 1: 211. 1821. 
Chamaecistus procumbens Kuntze, Rev. Gen. 388. 1891. 
A depressed shrub with more or less matted branches, seldom more than 2 dm. tall; 
leaves mostly opposite, numerous, the blades very thick, oblong to oval, 3-8 mm. long, obtuse, 
revolute, very prominently 1-ribbed beneath, glabrous, often glaucous beneath along the mid- 
rib, stout-petioled; pedicels glabrous, 3-10 mm. long; calyx-lobes oblong to oblong-lanceolate, 
2-3 mm. long; corolla 4-5 mm. long; lobes ovate, obtuse; stamens 2-3 mm. long; capsules ovoid 
or ovoid-conic, 3-4 mm. long, abruptly pointed, glabrous. 
Tyee Locairy: Alps. 
