170 BULLETIN 53, UNITED STATES NATIONAL MUSEUM. 



3829. Dryopteris macrocarpa (Fontaine) Knowlton. Type. 



Potomac (L/Ow. Cret.) Bank of Dutch Gap Canal, Vir- 

 ginia. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 92. 

 See Aspidium macrocarpum. 



3329. Dryopteris microcarpa (Fontaine) Knowlton. 'Type. 



Potomac (Low. Cret.). Hillside near Potomac Run, Vir- 

 ginia. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 92. 

 See Aspidium microcarpum. 



3147. Dryopteris monocarpa (Fontaine) Knowlton. Types. 



7429. Kootanie (Low. Cret.). Great Falls, Montana. 



743 2 - Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 92. 



See Aspidium monocarpum. 



3153. Dryopteris montanense (Fontaine) Knowlton. Type. 



Kootanie (Low. Cret.). Great Falls, Montana. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 92. 



See Aspidium montanense. 



3344. Dryopteris parvifolia (Fontaine) Knowlton. Type. 



3822. Potomac (Low. Cret.). Fredericksburg; banks of Dutch 



3823. Gap Canal; fish hut above Dutch Gap Canal, Virginia. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 92. 

 See Aspidium parvifolium. 



24. Dryopteris ( Lastrea ) polypodioides? (Ettingshausen) Knowl- 



25. ton. Supplemental type. 

 Laramie? (Cret.). Sand Creek, Colorado. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 93. 



See Lastrea (Goniopteris) polypodioides? and Goniopteris 

 polypodioides. 



3426. Dryopteris virginica (Fontaine) Knowlton. Type. 



3827. Potomac (Low. Cret.) Roadside near Potomac Run; 72d 



milepost, near Brooke, Virginia. 



Knowlton, Bull. No. 152, U. S. Geol. Surv., 1898, p. 1. 



See Aspidium virginicum. 



5379. Dryopteris virginica (Fontaine) Knowlton. Type. 



See Aspidium virginicum. 



4389. Dryopteris weedii Knowlton. Types. 



5135. Fort Union (Tert.). Cliff on Yellowstone River and Can- 



yon above mouth of Hell Roaring Creek, Yellowstone 

 National Park. 



Knowlton, Mon. XXXII, Pt. II, U. S. Geol. Surv., 1899, p. 669, pi. 

 80, fig. S; pi. 81, fig. 2. 



