48 ERICACEAE. Pyrola. 



Var. uliginosa, Gray. Calyx-lobes shorter, usually broadly ovate, sometimes ob- 

 tuse : leaves from subcordate to obovate, generally dull : flowers rose-colored or purple. 



Man. ed. 2, 259. P. uliyinosa, Torr. Fl. N. Y. i. 452, t. 69. P. oboi-ata, Bertol. Misc. iii. 11, t. 2. 



Cold bogs, northward nearly across the continent : distinguished from the preceding with 

 reddish flowers only by shorter and broader calyx, and leaves seldom with a sinus at base. 



Var. bracteata, Gray. Like the preceding forms, but larger : leaves commonly 

 2 or 3 inches long and thinnish, sometimes variegated with whitish bands : scape often a 

 foot or more high ; the scaly bracts large and conspicuous : anthers (as in all these forms, 

 but especially in this) distinctly mucronate at base: calyx-lobes triangular-lanceolate, 

 acute or acuminate, commonly half the length of the rose-colored or purplish petals. 

 Bot. Calif, i. 460. P. bracteata, Hook. 1. c. P. elata & bracteata, Nutt. 1. c. 270. Conifer- 

 ous woods of California to Br. Columbia ; the prevailing or exclusive form. 



Var. pumila, Hook. 1. c. A remarkable low variety : leaves firm-coriaceous, an 

 inch or much less in diameter : scape 3 or 4 inches high, 5-10-ftowered : flowers propor- 

 tionally large, white : calyx-lobes oblong-lanceolate or linear-oblong. P. Grcenlandica, 

 Hornem. Fl. Dan. t. 1817. P. r/randiflora, Radius, I.e. 27, t. 3; Alefeld, I.e. t. 2, f. 12. 

 P. rotundifolia, var. f/randijiora, DC. 1. c. Labrador to Mackenzie River along the arctic 

 coast. (Greenland.) 



P. picta, Smith. Leaves firm-coriaceous, dull, commonly veined or blotched with white 

 above, pale or sometimes purplish beneath (1 to 24- inches long), from broadly ovate to 

 spatulate or narrowly oblong, all longer than the petiole ; the margins quite entire, or 

 rarely remotely denticulate : rootstocks rigid and often branched or clustered : scapes a 

 span or more high, 7-15-flowered : bracts few and short : calyx-lobes ovate, not half the 

 length of the greenish-white petals : cells of the anther with a distinct neck or beak below 

 the orifice. Rees Cycl. ; Don, 1. c. ; Hook. Fl. ii. 47 ; Gray, Bot. Calif, i. 460. P. dfiitata, 

 Smith, 1. c. ; Hook. 1. c. t. 136 ; a common form with narrow and erect leaves, remotely but 

 seldom strongly denticulate. Thelaia sjialhulala, Alefeld, 1. c. Nootka Sound to California, 

 and east to Wyoming and S. Utah. In the drier regions often very small-leaved. 

 * * * Leafless, from deep scaly-toothed branching rootstocks, doubtless parasitic. 

 P. aphylla, Smith. Scapes a span to a foot high, subulate-bracteate, reddish or lurid : 

 raceme several-many-flowered: calyx-lobes ovate, acute, very much shorter than the ob- 

 ovate white petals : anthers tubular-beaked under the orifice of the cells : deflexed style 

 almost straight. Hook. Fl. ii. 48, t. 137; Gray, Bot. Calif, i. 461.-- Thelaia aplujlla, Ale- 

 feld, 1. c. Coniferous woods, California to Puget Sound. According to Nuttall, there are 

 sometimes, " on infertile shoots, a few small, ovate or lanceolate, greenish leaves." These 

 not since seen ; but there is such a form of the preceding species. 



28. ALL6TROPA, Torr. & Gray. (A).loTQonog, in another manner, the 

 flowers not turned to one side as in Monotropa.) A single species, connecting 

 the PyrolecK with the Monotropece. 



A. virgata, Torr. & Gray. Herb reddish or whitish, rather fleshy, a span or two high : 

 simple erect stem thicker at base, there densely and above more sparsely scaly : lower scales 

 ovate ; upper lanceolate, passing into linear bracts of the virgate many-flowered spike : 

 flowers 2-bracteolate. Gray in Pacif. R. Rep. vi. 81, Proc. Am. Acad. vii. 368, & Bot. Calif. 

 i. 461; Torr. Bot. Wilkes Exp. 385. Under oaks, &c., Cascade Mountains, Washington 

 Terr., to the Sierra Nevada, California. 



29. PTER6SPORA, Nutt. PINE-DROPS. (From mtQW, wing, and 

 a, seed, alluding to the remarkable wing of the seed.) Capsule becoming 

 nearly naked in age ; the thin valves persistent after dehiscence, being fixed by 

 the partitions to the columella, in the manner of Pyrola, &c. Seeds innumerable 

 (as in the tribe), on the pendulous placentae ; the nucleus ovoid, with a nearly 

 close thin coat, apiculate at both ends, the upper apiculation bearing a broad and 

 hyaline rounded or reniform and reticulated wing, which is many times larger 

 than the body of the seed. A single species. 



