THE CAYUGA FLORA. 119 



1 149. C. intumescens, Rudge. (H. aud C.j 

 Chiefly near the colder swamps ; frequent. June-Aug. 

 South Hill Marsh, north of Forest Home, and elsewhere. 



1 150. C. Grayii, Carey. 



Shaded swamps ; rare. June-July. 



Freeville, south of Fir-Tree Swamp, 1882, (F. C. C. and W. R. D.) 



(Head of Owasco L., with Carya Sulcata, 1SS1.) 



1151. C. lupulina, Muhl. (H. and C.) 

 Swamps ; common and variable. June 20- Aug. 



Beside the typical form, having the fertile spikes approximate, 

 there are several well-marked conditions, as follows : 1. A form 

 with stalked and scattered fertile spikes, frequent and approaching 

 in aspect C. Halei, Boott, (Illustr. II, t. 279.) 2. The " var. longi- 

 pedunculata, Sartwell," (see Horace Mann Herb. C. U.) having 

 4-7 spikes, the pistillate on long peduncles, the longest 20-25 cm - ! 

 scarce near Ellis Hollow Swamp. 3. A large robust form ; leaves 

 10-14 cm. broad, spikes and perigynia large and akenes broader 

 than usual but mostly abortive ; Woodwardia Swamp and Myers 

 Point. 4. The well-marked var. polystachya, Schw. and Torr. , 

 (C. lupuMformis, Man., p. 598,) in Cornell U. Herb, and Herb, of 

 Hani. Coll., from Penn Yan, {Sartwell.) 



1 152. C. lupulina, Muhl. X C. retrorsa, Schw., (C. lupulina, Muhl., 

 par. gigantoidea, Dew., Amer. Jour, of Arts and Sci., XCI, 1866, 

 p. 328.) The specimens from which Dewey described his var. gi- 

 gantoidea were collected by Hon. H. B. Dord, on M}'ers Pt. in 1865; 

 and his description, and the specimens still to be found there, agree 

 substantially with those found rather frequently on the Ithaca 

 Marsh between the Glass Works and Willow Ave. ; north of Free- 

 ville ; and near Taughannock Sta. of C. S. railroad, (F. C. C) After 

 carefully examining about a hundred specimens, there seems little 

 doubt that they are hybrids of the above, for the following reasons : 



I. The diverging perig3mia are intermediate in size and number 

 of nerves. 2. The 2-3 pistillate spikes are scattered as in C. lupu- 

 lina, (form 1,) and mature between the time of ripening of C retrorsa 

 and of C. lupulina. 3. There are usually 2-3 staminate spikes with 

 the aspect of C. retrorsa, (C lupulina has but one,) often bearing 

 a few perigynia at the base from which small staminate spikes are 

 frequently proliferous. The latter condition is often seen in C re- 

 trorsa and is shown in Boott's tab. 276 and described on p. 94, Vol. 



II. 4. Akenes almost alwa}^s abortive, as is usual with hybrids; 

 when present not well-formed. 5. When mature the perigynia re- 

 semble the inflated ones of C. lupulina in texture and appearance, 

 but are straw-colored like C retrorsa. 6. The hybrids are usually 

 accompanied by both the above species.. It is interesting to find 

 this form in the Herb, of Prof r Thomas, collected in 1827. 



1 153. C. folliculata, L. (H.) 

 Low woods ; scarce. June-Aug. 



South Hill Marsh. North of Forest Home in Woods. Freevill e, 

 in Fir-Tree Swamp. North of Etna. Beaver Cr. Swamp. 



