Vor. II.J WHITE-ALDER FAMILY. 549 
2. Clethra acuminata Michx. Ge : 
Mountain Sweet Pepperbush. 
(Fig. 2725.) 
Clethra acuminata Michx. Fl. Bor. Am. 1: 260. 
1803. 
A tall shrub or small tree, similar to the pre- 
ceding species. Leaves oval, oblong, or ovate, 
acuminate at the apex, narrowed or rounded at 
the base, green above, pale and sometimes pu- 
bescent beneath, closely serrulate with very 
sharp-pointed teeth, 2’-7’ long, sometimes 3 14’ 
wide; petioles 4’’-12’ long; racemes spreading 
or recurved, solitary, or 2-3 together, 2/-8/ 
long, the rachis, pedicels and calyx densely 
pubescent or canescent; bracts longer than the 
flowers, caducous; filaments and bases of the 
petals hirsute. 
“= 
In mountain woods, Virginia and West Virginia 
to Georgia. Ascends to 4500 ft. in North Caro- 
lina. July-Aug. 
Family 2. PYROLACEAE Agardh, Cl. Pl. 18. 1825. 
WINTERGREEN FAMILY. 
Low mostly evergreen perennials, with branched rootstocks. Leaves petioled. 
Flowers perfect, nearly regular, racemose, solitary or corymbose, white or pink. 
Calyx 4-5-lobed. Corolla very deeply 4—5-parted, or of 5 petals. Stamens twice 
as many as the divisions of the corolla, the anthers introrse in the bud, inverted 
at anthesis, opening by pores or short slits; pollen-grains in 4’s. Ovary super- 
ior, 4-5-celled; style short or slender, often declined; stigma 5-lobed, or 
5-crenate; ovules very numerous, anatropous. Fruit a loculicidally dehiscent 
capsule. Seeds very numerous, minute, the loose cellular coat much larger 
than the almost undifferentiated embryo. 
Three genera and about 20 species, natives of the northern hemisphere. 
Flowers racemose; leaves basal. 1. Pyrola. 
Flowers solitary or corymbose; leaves opposite or whorled. 
Stem leafy at base; flower solitary; style long. 2. Moneses. 
Stem horizontal; branches erect, leafy; style very short. 3. Chimaphila. 
1. PYROLA L. Sp. Pl. 396. 1753. 
Low glabrous herbs, acaulescent or nearly so, stoloniferous, perennial. Leaves basal, 
persistent (one northwestern species leafless). Flowers nodding, or in one species ascend- 
ing, white, yellowish, pink, or purple, racemose, on erect bracted scapes. Calyx 5-parted, 
persistent. Petals 5, concave, sessile, deciduous. Stamens Io, declined, or straight and 
connivent; filaments subulate, glabrous; anthers erect in the bud, emarginate or 2-beaked 
at the base, mostly reversed at flowering, each sac opening by a basal but apparently apical 
pore. Ovary 5-celled; style straight or declined, filiform, or thickened at the summit; stigma 
5-lobed. Disk usually obsolete, rarely present and 1o-lobed. Capsule subglobose, 5-lobed, 
5-celled, loculicidally 5-valved from the base, the valves cobwebby on the margins when open- 
ing, the apex and base intruded. [Latin, diminutive of Pyrus, pear, from the similar leaves. ] 
About 15 species, natives of the northern hemisphere. Besides the following, 3 others occur 
in western North America. 
Style and stamens declined (slightly so in no. 6). 
Petals very obtuse; leaves rounded at the apex. 
Leaves rounded, truncate or narrowed at the base. 
Flowers white or greenish white; plants of dry woods. 
Calyx-lobes oblong or lanceolate; leaves shining. 1. P. rolundifolia. 
Calyx-lobes ovate or triangular, short; leaves dull. 
Blades orbicular, coriaceous, mostly shorter than petioles. 2. P. chlorantha. 
Blades oval, membranous, longer than their petioles. 3. P. elliptica. 
Flowers pink or purple; bog plant. 4. P. uliginosa. 
Leaves reniform, cordate; flowers pink. 5. P. asartfolia, 
Petals and leaves acute, the latter small. 6. P. oxypetala. 
Style straight; stamens connivent. 
Style short; disk none; raceme regular. 7. P. minor. 
Style elongated; disk 10-lobed; flowers in a 1-sided raceme. 8. P. secunda. 
