ECOLOGY OF ISLE ROY ALE. 231 



79. Neckera oligocarpa B. & S. Forest road, Washington Harbor: 

 woods. 



80. Dickelyma uncinatum Mitl. (?) Growing in a pool on small 

 island at upper end of Rock Harbor. Unusually large. Ill, 1. 



81. Palndella squarrosa (L) Brid. Bog margin of Forbes Lake. II, 

 5. 



PteridopJiytes. 



OpMoglossaceae — Adder's Tongue Family. 



82. Botrychium lunaria (L) Sw. Moonwort. Rare. Partially shaded 

 rocky ground near Rock Harbor light-house, I, 1. 



83. Botrychium vwginicum (L) Sw. Virginia Grape Fern. Spar- 

 ingly distributed in rich woods. I, 3; III, 4; V, 4. 



Osmundaceae. 



84. Osmunda regalis L. Royal Fern. One locality. Rich low ground 

 near small creek emptying into Forbes Lake, II, 5. 



85. Osmunda cinnamomea L. Cinnamon Fern. Moist thickets and 

 low ground. II, 5. 



86. Osmunda claytoniana L. Interrupted Fern. Mesophytic woods. 

 Not common. 



Polypodiaceae — Fern Family. 



87. Onoclea sensibilis L. Sensitive Fern. Fairly abundant. 



88. Onoclea struthiopteris (L) Hoffm. Ostrich fern. Few localities : 

 not abundant. 



89. Woodsia ilvensis (L) R. Br. Rusty Woodsia. Several small, 

 dense patches on rock surfaces, and along rock crevices. Island upper 

 end of Rock Harbor and I, 1 ; V, 2. 



90. Cystopteris 'bulbifera (L) Bernh. Bulblet Cystopteris. Thinly 

 scattered on moist, shaded cliff faces. Cliff near Rock Harbor light- 

 house. 



91. Oystoptei'is fragilis (C) Bernh. Brittle Fern. Shaded, moist 

 places. Not abundant. 



92. Dryopteris thelypteris (L) A. Gray. Marsh Fern. Wet mar- 

 gins of bogs, and other low, wet places. Common in such places. II, 

 5; III, 5. 



93. Dryopteris fragrans (L) Schott. Fragrant Shield Fern. Com- 

 mon in patches on cliffs and rocks along shore, I, 1. 



94. Dryopteris filiso-mas (L) Schott. Male Fern. Fairly abundant 

 in rich, moist woods. Especially abundant near Benson Brook. II, 1. 



95. Dryopteris spinulosa (Retz.) Kuntze. Spinulose Fern. Rich, 

 moist woods. Fairly common. Unusually large and vigorous on Malone's 

 Island in Siskowit Bay. Ill, 4; V, 4. 



96. Phegopteris phegopteris (L) Underw. Long Beech Fern. Moist 

 woods (IV, 4). Less common than P. dryopteris. 



97. Phegopteris dryopteris (L) Fee. Oak Fern. Rich, moist woods. 

 Fairly common. IV, 4; III, 4. 



98. Asplenium trichomanes L. Maiden-hair Spleenwort. On thinly 

 soil-covered rocks. Rare. Rock cliff along Siskowit cabin trail. V, 4. 



