The Flora of the Cayuga Lake Basin 301 



4. H. GENTIANOIDES (L.) BSP. 



Dry sterile gravelly soil; rare. Aug.-Sept. 15. 



Found in 1921 in considerable abundance in a field n. of South Hill Marsh (W . 

 C. Muenscher), still persisting in 1925 and apparently established. 

 Native: Me. to Fla. and Tex., and s. w. Ont. to 111. and La. 



5. H. mutilum L. 



Ditches, exsiccated places, and shores, in a great variety of soils both light 

 and heavy, sometimes in acid sands, at other times near marl bogs, or in acid 

 sphagnum ; common. July-Sept. 



N. S. to Man., southw. to Fla., Kans., and Tex., including the Coastal Plain. 



A form with cream-colored flowers occurs w. of Freeville. 



6. H. majus (Gray) Britton. (H. canadense, var. major, of Cayuga Fl.) 



Sandy or gravelly shores or marshes, in calcareous or noncalcareous soils ; rare. 

 Aug. 



Spencer Lake; Summit Marsh (D. !) ; Goodwin (Taughannock) Point (£>.!); 

 rarely on the Montezuma Marshes (D.). 



E. Que. to Man., southw. to L. I., n. N. J., Pa., 111., Iowa, and S. Dak. ; also e. 

 Wash.; infrequent on the Coastal Plain. 



[H. canadense L. 



Reported from Summit Marsh by Dudley. A specimen in the C. U. Herb, col- 

 lected and so labeled by Dudley is an extreme of the preceding species.] 



7. H. virginicum L. (Elodea campanulata of Cayuga Fl. Elodcs of authors.) 



Purple St. John's-wort. 



In acid boggy soil ; frequent. Aug. 



"In sphagnum and other marshes; frequent" (£>.). Summit Marsh; Dryden 

 Lake; Mud Pond, McLean Bogs; moor of Junius peat bogs; and elsewhere. 



Newf . to Man., southw. to Fla., La., and Nebr. ; common on the Coastal Plain. 

 Found also in n. e. Asia. 



88. CISTACEAE (Rockrose Family) 



a. Petals 5, fugacious, large and showy in the larger flowers ; leaves pale-tomentose 

 beneath, stellate-puberulent above. 1. Helianthemum 



a. Petals 3, withering-persistent, minute; leaves not tomentose beneath. 



2. Lechea 

 1. Helianthemum (Tourn.) Mill. 



a. Larger flowers 5-12 in a short terminal cymose raceme, each 1.5-2.5 cm. in diam., 

 pale yellow, with capsules 3-5 mm. in diam. and the calyx crisp-puberulent, 

 canescent ; these flowers little if at all overtopped by the later branches ; capsules 

 of the smaller flowers uniform, about 2 mm. in diam. ; seeds reticulated. 



1. H. Bickncllii 



a. Larger flowers solitary or rarely 2, 2-4 cm. in diam., bright yellow, with cap- 

 sules 6-9 mm. in diam. and the calyx pilose ; these flowers soon conspicuously 

 overtopped by the branches and becoming lateral ; capsules of the smaller 

 flowers of two sizes, the terminal ones 3-4 mm. in diam., the lateral ones much 

 smaller; seeds papillose. 2. H. canadense 



1. H. Bicknellii Fernald. (See Rhodora 21:36. 1919. H. majus of authors. H. 

 canadense, in part, of Cayuga Fl.) Frostweed. 



Dry sandy or gravelly banks, in acid soils ; scarce. June 20-July. 



Valley Cemetery, s. of Ithaca (D. and in C. U. Herb.) ; Buttermilk Glen (D. 

 and in C. U. Herb.); Coy Glen, crest of lower ravine, n. side; sandy crest of 

 Salmon Creek ravine, e. of Five Corners. 



N. S. to Minn., southw. to S. C, Tex., and Colo. ; common on the Coastal Plain. 



