12 HI.ir.HTS, ORCHIDS AND PERNS 



Orchidacese. 



i. Ai'I.kctrcm hikmalk, Nutt. In " Robertson's woods," — 

 common. 



2. PoGONIA PBNDUI,A, Lindl. Found in one spot in "Robertson's 

 woods," about a dozen specimens in bloom in September, — rare. 



3. Cai.opoc.on t'ci.CHKi.i.rs, R. Br. Not found nearer than 

 Wadena, — rare. 



4. Habknaria tridkntata. Hook. Dr. J. C. Arthur writes that 

 this is the first collection reported for Iowa. The specimens were found 

 near Wadena,— rare. 



5. Habexaria bracteata, R. Br. In woods, — rare. 



6. Habenaria Hookeri, Torr. Shady woods, — rare. 



7. Habenaria Hookeri, Torr., var. oblongifoua, Paine. 

 This is also new to Iowa lists. Miss Carrie Harrison, who has charge of 

 the orchids in the National Herbarium, agrees with me in regard to 

 this variety, — occurring with the last. 



8. Habenaria leucoph^Ea, Gray. This was collected by Dr. 

 C. C. Parker. I have not seen it growing, — rare. 



9. Habenaria psycodes, Gray. Dr. J. C. Arthur writes that 

 only one specimen has been reported for Iowa before. I found three 

 plants near the twin-bridges, five miles from Fayette on the Maynard 

 road, — rare. 



[O. Cvpripedium candidum, Muhl. Low prairies, — rare. 



11. Cvpripedium parviflorum; Salisb. Woods and prairies, — 

 rare. 



12. Cvpripedium pitbescens, Willd. Same locations as last, — 

 nearly as rare. 



13. Cvpripedium spectabii^e, Salisb. Low places, — rare. 



14. Orchis spectabilis, L. Woods, — our most common' species, 



Filices. 



1. Adiantum pEdatum, L. Woods, — common. 



2. Pteris aquilina, L. Woods, — common. 



3. PEivL^A gracilis, Hook. Shaded lime-stone cliffs, — rather 

 rare. 



4. Peli./Ha atropurpurea, Link. With the last. 



5. ASPLENIUM THELYPTEROIDES, Michx. Woods, — frequent. 



o. CampTosorus rhizophyuus, Link. Shaded lime-rocks,— rare. 

 7. CvstopTERIS BULBIFERA, Beruh. Shady ravines, — frequent. 

 S. Aspidum THELA'PTERIS, Swartz. Low prairies, — frequent. 

 9. OnoclEA sensibilis, L. Low prairies, — common. 



10. Onoci.KA StruTHIoptKRIS, Hoffmann. Borders of woods 

 — frequent. 



11. Woodsia OBTUSA, Torr. Lime-rocks. — rare. 



12. Osmcnda Ci.amoniana, L. Woods, — frequent. 



Ophioglossacese. 



1. BOTRYCHIUM TERN ATUM, Swartz. Very rare. I found only one 

 plant (in "'Robertson's woods") though I searched the spot repeatedly. 



2. BOTRYCHIUM VlRGlNIANUM, Swart/.. "Robertson's woods," 

 — common. 





