BOTANICAL GAZETTE. igo 



escarpments of limestone cliffs with a south exposure. It seems to 

 prefer isolated masses of limestone, separated from the main cliff by 

 land slides. 



Tribe Vittarie^. 



(Not Represented.) 



Tribe Pteride^. 



4. Cheilanthes Alahamensis, Kunze. — Distributed throughout the 

 mountainous region of Arkansas upon limestone ledges only. Usual- 

 ly in comparatively dry situations, though found in shaded places and 

 niches of rocks where it grows larger. This species flourishes upon 

 the tufa ledges, deposited by the Hot Springs in Garland Co. in very 

 moist places. Inland and along streams. 



5. Cheilanthes vestita, Svvartz. — Throughout the N. and W. part 

 of the State upon the flat tops of sandstone ledges, generally, but 

 sparingly in similar situations upon limestone. Plentiful inland and 

 also upon the river cliffs. 



6. Cheilanthes lanuginosa, Nutt. — Grows quite plentifully, in only 

 one known situation, in N. W. Ark. It is found on limestone cliffs, 

 upon the N. and E. sides of valleys running inland from White River. 

 Though loving the light, it grows larger when protected by pr. jections. 

 Its habitat is similar to that of Notholoena dealbata, though they have 

 never been found together. The species may be regarded as scarce 

 in Arkansas. 



7. Cheilanthes tomeniosa, Link. — Sparingly in N. W. Ark. upon lime- 

 stone cliffs. Plentiful in the mountains of the S. W. part of the State. 

 It grows in dry situations upon sandstone, shale and limestone. It is 

 most abundant high up the hills near the base of ledges facing the south, 

 but can be found on limestone cliHs sparingly, or in moist valleys 

 upon all formations. 



8. Pellceaatropnrpurea , Fee. — Plentiful throughoutthe upland portion 

 of the State, upon the escarpments of sandstone and limestone ledges 

 with a south exposure. Grows inland upon the cliffs of eroded valleys, 

 as well as along streams. 



9. Pteris aquilina, L.— Occurs in the N. W. part of Ark. upon hills 

 and prairies, but the most common form is : 



var. caudata. Hooker, which is found all over the S. part of the 

 State on the ridges and is known as "Upland Fern." 



ro. Adiantuni Capillus- Veneris, L. — Throughout the N. and VV. part 

 of Ark., upon both lime and sandstone cliffs, in situations affording 

 perennial moisture. 



The finest si)ecimens found in the U. S. (of this species) grow 

 in N. W. Ark. upon shelving sandstone ledges of White River, be- 

 tween high and low water mark. It grows on the calcareous tufa 

 ledges at Hot Springs Nothing in the foliage of plants could excite 

 more admiration than a crevice for several hundred feet adorned by 

 an uninterrupted line of these graceful drooping ferns. 



II. Adiantuni pedatum, L. — Throughout N. and W. Ark. in the up- 

 land country. It grows most luxuriantly at the base of shelving sand- 

 stone cliffs in shaded and damp situations, but is also found along 

 shaded moist ravines in rich woods. 



