MICHIGAN ACADEMY OF SCIENCE. 
89 
Orchidaceae (Orchis Family). 
Cypripedium parviflorum Salisb. Smaller Yellow Lady’s Slipper. 79, 116. 
In cedar bog's, not common. 
Cypripedium parviflorum pubescens (Willd.) Knight. Large]' Yellow Lady/ s 
Slipper. In cedar bogs with the preceding, not common. 
Cypripedium hirsutum Mill. Showy Lady’s Slipper. 89. Cedar bogs, 
not common. 
Cypripedium acaule Ait. Stemless Lady’s Slipper. 445.1. Four plants 
found in a Chamaedaphne bog in recently burnt-over ground. 
Habenaria flava (L.) Gray. Occurring in the tamarack Association, rare. 
Habenaria hyperborea (L.) R. Br. 70, 369. Fairly abundant in cedar 
bogs. 
Habenaria clavellata (Michx. ) Spreng. Found by Mr. Quick, July 10, 1911. 
Habenaria obtusata (Pursh) Richards. 375. In a cedar bog, not common. 
Habenaria orbiculata (Pursh.) Torr. 266. Two plants found in the Picea- 
Abies association, by Miss Arbuthnot. 
Habenaria blephariglottis (Willd.) Torr. White Fringed Orchid. 26. 
About a dozen plants found in a Chamaedaphne bog around Silver 
Lake. 
Habenaria psycodes (L.) Sw. 75. A few plants found in a cedar bog. 
Calopogon pulchellus (Sw.) R. Br. 38. In a Chamaedaphne bog at Silver 
Lake. 
Spiranthes romanzofflana Cham. (Ladies’ Tresses). Aliss Anna Arbuth- 
not, Aug. 4, 1911. 
Epipactis repens ophioides (Fernald)A. A. Eaton. Miss Arbuthnot, Aug. 
4. 1911. 
Epipactis decipiens (Hook.) Ames. Rattlesnake Plantain. 406. A few 
plants in beech-maple woods north of Douglas Lake. 
Corallorrhiza maculata Raf. Coral Root. 202. A few plants in the 
beech-maple woods along the north shore of Douglas Lake. 
Listera convallarioides (Sw.) Torr. Twayblade. Found by Mr. Loew in 
1910. 
Salicaceae (Willow Family). 
Salix lucida Muhl. Shining Willow. 86. One of the commonest species 
in the willow thickets and invading many of the wet ground associa- 
tions. 
Salix serissima (Bailey) Fernald. Autumn Willow. 205. Two bushes 
at the limit of ice work on Douglas Lake west of Ingleside. 
Salix longifolia Muhl. Sand Bar Willow. 158. Along the shore of Doug- 
las Lake, not abundant. 
Salix cordata Muhl. 111. Along a road thru a cedar bog. 
Salix balsamifera Barratt. Found by Mr. Loew in 1910. 
Salix glaucophylla Bebb. 342. On the beach of Douglas Lake. 
Salix pedicellaris Pursh. 392. A characteristic shrub in the low bog 
thickets and readily invading the Carex jiliformis mat. 
Salix discolor Muhl. Glaucous Willow. 280. In willow thickets, fairly 
common. 
Salix discolor x rostrata. 404. Bordering Douglas Lake and occasional 
in the beech-maple woods. 
Salix rostrata Richards. 11. A common willow in the thickets and in 
the aspens, but also occurring in cedar bogs and beech-maple woods. 
