50 



Chester Co., Penn. (Kilvington, in Herb. Acad. Nat. Sci., Phil.) 

 This variety is to be regarded as the extreme broad-leaved 

 and hairy form of the species. Its range appears to be restricted 

 to the serpentine barrens of Pennsylvania, where it apparently 

 passes gradually into the var. oblongifoliiivi. 



Var. FuEGlANUM, Hook., f Low ; smooth ; leaves short, small, 

 coriaceous and imbricated, lanceolate to ovate-lanceolate in out- 

 line ; pedicels solitary, or in few-flowered cymes ; capsules some- 

 what exceeding the calyx. (Plate LXIV., f 3.) 



C. arvense, var. , Coulter, in Hayden Rep., 1872, 762, name only. 



Collected by Professor J. M. Coulter, Aug. nth, 1872, at 

 Lower Fire Hole Basin, Yellowstone Park. 



This interesting form is identical with the var. Fiiegiamim, 

 Hook, f, in Bot. U. S. Expl. Exp., i., 129 (our Plate LXIV., 

 f. 4), from Fuegia, with specimens of which we have compared 

 it. 



As analagous to this remarkable distribution we have that of 

 Carex Magellanica, Lam., whose range in North America is 

 from the arctic regions to northern Pennsylvania and Utah. 



EXPLANATION OF THE PLATES. 



Plate LXin. — Cerastiinn arvense, L., var. oblongifoliuni, drawn 



from a living plant collected on Todt Hill, Staten Island, 



New York, May 26th, 1886. 

 Plate LXIV., fig. I. — C. arvense, L. Drawn from a specimen 



collected by Prof, T. C. Porter, on the shore of the Delaware 



River below Phillipsburg, N. J. 



Fig. 2. — C. arvense, L., var.' maximum Drawn from a 

 specimen collected by Mrs. M. K. Curran, near San 

 Francisco, Cal. 



Fig. 3. — C. arvense, L., var. Fucgiannm. Drawn from speci- 

 men collected by Prof J. M. Coulter, at the Lower Fire 

 Hole Basin, Yellowstone National Park. 



Fig. 4. — C. arvense, L., var. Fnegianiim, Hook., f from 

 Orange Harbor, Fuegia. 

 Plate LXV., Fig. 5. — C. arvense, L., var. latifolium, Fenzl. Drawn 



from specimen collected in the mountains of Colorado, 18/2, 



by Dr. Torrey. 



