1923]  Fernald,—Lycopodium sabinaefolium and L. sitchense — 167 
uncles, while those of deep shade have them longer. Thus the bulk 
of typical L. sitchense, a plant characteristic of open barrens and 
alpine summits, has sessile or short-peduncled strobiles, while the 
specimens from woods show definite elongation of the peduncle. 
Conversely, L. sabinaefolium is most commonly a plant of woodland 
and thicket and in deep shade its peduncles may reach the length 
of 5-8 cm.! 
Search for new characters to separate the two plants as species 
has thus far proved fruitless and the writer is forced to the conclusion 
that L. sabinaefolium and its var. sitchense are quite parallel with 
L. obscurum and its var. dendroideum; the tendency to dorsiventral 
branchlets and looser habit being found in the plant which is more 
characteristic of woods and thickets, the tendency to more terete 
branchlets and compact habit in the plant which more often occurs 
in the open. In this connection it is significant that in his study of - 
the sheets in the Gray Herbarium, Professor Lloyd originally gave 
them a varietal name which seems not to have been published. It 
is also significant that Lloyd & Underwood state, in their discussion 
of L. sitchense: “This form has been confused with L. sabinacfolium 
Willd. and Herr Ernst Pritzel, who has kindly examined Willdenow’s 
type sheet for us at Berlin, . . . assures us that both this plant 
and what we here regard as true L. sabinacfolium are a part of Will- 
denow's original material from which he doubtless drew the des- 
cription of L. sabinaefolium. The description of the latter with its 
expression ‘foliis lanceolatis acutis quadrifariis’ indicates clearly the 
form Willdenow had in mind in naming the plant."? Willdenow's 
phrase certainly indicates which of the two plants he called L. sabi- 
nacfolium should be taken as the type; but the circumstance that 
he had L. sitchense mixed with it shows that he did not regard them as 
distinct species. 
Gray HERBARIUM. 
1 Such plants as: dry spruce woods, Nouvelle, Quebec, Collins & Fernald (5 em.); 
dry woods, Tarbet Vale, Cape Breton, Nichols, no. 1383 (3-6 cm.); woods, Fall 
Brook, near St. Francis River, Maine, Churchill (5.5—6.5 cm.); woods, Sharon, New 
Hampshire, Blake no. 516, paratype of L. sabinaefolium, var. sharonense Blake 
(6.5-8 cm.). 
2 Lloyd € Underwood, l. c. 162, 163 (1900). 
