48 ERICACEAE. Pyrda. 



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. uliginosci, Torr. Fl.'N. Y. i. 452, t. 69. P. obovata, 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. data & 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-flowered : flowers propor- 

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

 Hornem. PI. Dan. t. 1817. P. c/randiflbra, Radius, I.e. 27, t. 3; Alefeld, I.e. t. 2, f. 12. 

 P. rotundifolia, var. grandiflora, 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 2-J- 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. PI. ii. 47 ; Gray, Bot. Calif, i. 460. P. dentata, 

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

 seldom strongly denticulate. Thelaia spaihulala, 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. PI. ii. 48, t. 137 ; Gray, Bot. Calif, i. 461. — Thelaia aphyUa, 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. ALLCJTROPA, Torr. & Gray. {AlloxQonog, in another manner, the 

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

 the Pyrolea with the Monotropece. 



A. virgata, Torr. & Gray. Herb reddish or whitish, rather flesh}', 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 Pacjf . 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. PTEROSPORA, Nutt. Pine-drops. (From Ttxtcjor, wing, and 

 anoQti., 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 placentas ; 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. 



