Tab. 8710 a. 
PYROLA ULIGINOSA. 
North America. 
EriIcacEAkE. Tribe PyroL.EAr, 
Pyrota, Linn. ; Benth, et Hook. f. Gen. Plant. vol. ii. p. 602. 
Pyrola uliginosa,Torr. d A. Gray ex Torr. Fl. New York, vol.i. p. 458, t. 69; 
Britton é Brown, Ill, Fl. N. United States, vol. ii. p. 551, fig. 2729; ed. 2, 
vol. ii. p. 669, fig. 83200; Andres in Ber. Deutsch. Bot. Ges. vol. xxx. 
p- 569, fig. I 4 et II 2,3; Rydberg in N. Amer. Flora, vol. xxix. p. 23 ; 
species P. rotundifoliae, Linn., affinis, foliis tenuioribus haud nitidis, 
floribus paulum minoribus rubro-purpureis et calyce breviore distinguenda. 
. Herba perennis, caudice longo repente ramoso. Caulis brevissimus. Folia 
suborbicularia vel ovato-elliptica, apice rotundata vel raro subacuta, basi 
leviter cuneata et interdum inaequalia, minute crenulata, ad 7 cm. longa 
et 6 cm. lata, tenuia, glaberrima, supra atro-viridia, haud nitida, infra 
pallidiora, interdum rubescentia ; petiolus ad 10 cm. longus, acute 8-angu- 
latus. Scapus erectus, 1'5-3 cm. longus, glaber, striato-angulatus, 
squamis 1-3 lanceolatis membranaceis 1°2-1'5 em. longis instructus, 
Racemus 6-10 em. longus, laxe 5-20-florus ; bracteae lanceolatae, mem- 
branaceae, roseolae, pedicellis subaequilongae ; pedicelli graciles, 4-7 mm. 
longi. Flores nutantes, fragrantes. Calycis lobi ovato-triangulares vel ovato- 
lanceolati, 2°5-3 mm. longi, basin versus 2 mm. lati, acuti. Corolla extra 
praesertim vivide rubro-purpurea vel rosea, intus saepe pallide rosea, circiter 
1*1 cm. lata. Petala obovata vel elliptica, plus minusve concava, apice 
rotundata, 6-8 mm. longa,6-7 mm, lata. Stamina 10, conferta, adscendentia; 
antherae purpureae vel roseae, loculis basi breviter mucronatis. Ovariwm 
depresso-globosum, 5-lobum, glabrum ; stylus declinatus, 7-8 mm. longus, 
apicem versus annulatus, stigmate 5-lobulato, Fructus depresso-globosus, 
circiter 8 mm, diametro.—P. rotundifolia, Linn., var. uliginosa, A, Gray, 
Man. Bot. ed. 2, p. 259, et Syn. Fl. N. Amer. vol. ii. pt. 1, ed. 2, p. 48. 
P. rotundifolia yar. incarnata, A. Gray, ll.ce. p. 259 and p. 47, non var. 
incarnata, DC. P. incarnata, Piper in Contrib. U.S. Nat. Herb. vol. xi. 
p- 485, non Fisch. P. elata, Nutt. in Trans. Amer. Phil. Soc. N.S. 
vol. viii, p. 270. P. asarifolia, Michx. var. incarnata, Fernald in 
Rhodora, vol. vi. p. 178. Thelaia asarifolia, Alefeld in Linnaea, vol. 
XXVili. p. 54, partim. 7’. bracteosa, Alefeld, l.c. p. 57, partim.—S. A, San. 
This interesting and pretty plant, the Bog or Swamp 
Wintergreen of North America, was originally described 
from material collected by Dr. Knieskern at Oriskany, 
Oneida County, New York, where it was found in 
Sphagnum swamps. It is now known to be distributed 
from Nova Scotia to New York, South Dakota, Colorado, 
May, 1917, 
