1921] Fernald, — Expedition to Nova Scotia 285 



In Newfoundland, Nova Scotia and New England, where G. du- 

 mosa, var. Bigeloviana is distinctively a shrub of wet bogs and sphag- 

 nous pond-margins, it seems specifically distinct from typical G. du- 

 mosa which occurs from Virginia to the Gulf States, where the species 

 is characteristic of dry barrens. In typical G. dumosa the upper 

 surfaces of the leaves and of the bracts of the inflorescences are 

 scarcely if at all glandular, the corolla is 5-7 mm. long and the an- 

 thers are 2.8-3.5 mm. long, while in the more northern var. Bige- 

 loviana the upper surfaces of leaves and bracts are copiously glandu- 

 lar, the corollas are 8-9 mm. long, and the anthers 4-5 mm. long. 

 In order to test these characters in an intermediate area I have bor- 

 rowed, through the kindness of Mr. Bayard Long, the material of 

 the Philadelphia Academy, including the remarkable collection of 

 the Philadelphia Botanical Club. A careful study of this extensive 

 collection (about 00 sheets) from New Jersey, Delaware and eastern 

 Pennsylvania shows that, while in a large proportion of cases typical 

 G'. dumosa and its var. Bigeloviana are readily distinguished in New 

 Jersey and the adjacent region, there are too many cases in which 

 the characters break down to allow the elevation of var. Bigeloviana 

 to specific rank. Thus material from New Texas, Lancaster Co., 

 Pennsylvania, with the copious glandularity of the northern shrub, 

 has the small corolla (6.5-7 mm. long) and the small anthers (about 

 3 mm.) of the southern; or material from Speedwell, New Jersey, 

 with almost no glands on the foliage, has the large corolla (8.3 mm. 

 long) and the long anthers (4.7 mm.) of the northern very glandular 

 shrub, while almost glandless material from Manchester, New Jer- 

 sey, has the longest corolla seen (9 mm.). It is clear, then, that, 

 although very definite from southern New England to Newfound- 

 lander. Bigeloviana in New Jersey and eastern Pennsylvania passes 

 by various transitions into typical G. dumosa. 



Vaccinium vacillans Kalm. Yarmouth Co.: upper border of 

 cobble-beach of Butler's (Gavelton) Lake, Gavelton. See p. 166. 

 Recorded with doubt by Lindsay. 



* V. corymbosum L., var. amoexum (Ait.) Gray. Boggy thickets, 

 spruce swamps and lake-margins, common in southern Digby and 

 Yarmouth Cos.; the foliage commonly lustrous and glabrous except 

 for being hirsute on the veins beneath, but sometimes strictly glab- 

 rous and often as densely pubescent as in V. atrococcum and some- 

 times as small as in V. pennsylvanicuvi. The berries are commonly 

 blue with a bloom but occasionally as black as in V. atrococcum. 

 See pp. 97, 98, 109. 



