488 CONTRIBUTIONS FROM THE NATIONAL HERBARIUM. 
4. Pyrola chlorantha Swartz, Svensk. Vet. Akad. Handl. 1810: 190. pl. 5. 1810. 
Type LocALIty: Carlsberg near Stockholm, Sweden. 
Rance: British America to Oregon, New Mexico, Nebraska, and Virginia. 
New Mexico: Tunitcha Mountains; Sandia Mountains; Santa Fe and Las Vegas 
mountains. Deep woods, in the Canadian and Hudsonian zones. 
5. Pyrola elliptica Nutt. Gen. Pl. 1: 273. 1818. SHINLEAP. 
Type Locaury: ‘‘Common around Philadelphia, and in the woods of New Jersey.”’ 
Rance: British America to New Mexico, Illinois, and Maryland. ; 
New Mexico: Gallinas Planting Station; West Fork of the Gila. Damp woods, in 
the Transition and Canadian zones. 
3. MONESES Salisb. ONE-FLOWERED WINTERGREEN. 
Similar to Pyrola, but the 5 pure white petals widely spreading, orbicular; filaments 
subulate, naked, the anthers conspicuously 2-horned; style straight, exserted ; stigma 
large, peltate, with 5 radiating lobes; valves of the capsule naked; scapes 1-flowered. 
1. Moneses uniflora (L.) A. Gray, Man. 273. 1848. 
Pyrola uniflora L. Sp. Pl. 397. 1753. 
Type tocauty: ‘Habitat in Europae borealis silvis.’’ 
Rance: British America to Oregon, New Mexico, and Pennsylvania. 
New Mexico: Top of Las Vegas Range; Rio Pecos near Truchas Peak. Deep 
woods, in the Hudsonian Zone. 
107. ERICACEAE. Heath Family. 
Shrubs or trees with scaly buds and simple alternate exstipulate leaves, usually 
evergreen; flowers perfect, 4 or 5-merous, in small axillary or terminal clusterg; corolla 
urceolate or globular, 4 or 5-toothed, deciduous; stamens twice as many as the corolla 
lobes, included, the anthers dehiscent by terminal pores or chinks; fruit fleshy, drupa- 
ceous or berry-like. 
KEY TO THE GENERA, 
Ovary 5-celled, ripening into a granular-coated berry 
with many seeds and a firm endocarp; trees... 1. ArBUTUS (p. 488). 
Ovary 4 to 10-celled, with solitary ovules, in fruit be- 
coming a drupe with as many seedlike nutlets, 
or a solid stone; low shrubs, one of them pros- 
trate. ... 2... e eee eee eee eee 2. ARCTOSTAPHYLOS (p. 489), 
1. ARBUTUS L. 
Good-sized trees with exfoliating bark; leaves evergreen, coriaceous, alternate, 
petiolate; flowers small, white or flesh-colored, in a terminal cluster of racemes or 
panicles; calyx small, 5-parted; corolla globular to ovoid; ovules crowded on a fleshy 
placenta projecting from the inner angle of each cell; styles long, the stigmas obtuse. 
KEY TO THE SPECIES. 
Leaves elliptic-lanceolate, acute, glabrous...............---.....--- 1. A. arizonica, 
Leaves oblong or ovate, obtuse, permanently pubescent beneath..... 2. A. texana. 
1. Arbutus arizonica (A. Gray) Sarg. Gard. & For. 4: 317. 1891. 
Arbutus xalapensis arizonica A. Gray, Syn. Fl. ed. 2. 2': 396. 1886. 
TYPE LocaLity: Mountains of southern Arizona. 
Rance: Southern New Mexico and Arizona and adjacent Mexico. 
New Mexico: San Luis Mountains; Animas Peak. Low mountains. 
