280 Rhodora [NOVEMBER 
of northern Europe. The last plant cited by him, however, the 
“Lycopodium digitatum foliis Arboris Vitae, spicis bżgemełllis tereti- 
bus” of Dillenius, was the common plant of eastern America, as is 
shown very clearly by the plate of Dillenius drawn from a Pennsyl- 
vania specimen collected by John Bartram. This citation (at the 
last of his description) is the only reference to an American plant 
given by Linnaeus. That he could not have intended this as the pri- 
mary constituent of Z. complanatum, is shown not only by the preced- 
ing references to the European plant, but, furthermore, by his own 
descriptive phrase (in the uncompiled portion of the description) 
"spicis geminis." For while the common plant of Europe and 
extreme northern America has oftenest 2 (1 to 3) strobiles (spikes), 
the Alleghanian plant with “compact fan-like habit" usually has 4. 
Of the 88 peduncles of this form examined, 1 has 2 strobiles, 18 
have 3, 65 have 4, 3 have s, and 1 has 6, with an average of 4 
strobiles, the ‘Lycopodium digitatum....spicis digemellis” of 
Dillenius. 
These two forms of the species may be distinguished as follows : 
L. COMPLANATUM, L. Branches with loosely and irregularly ascend- 
ing branchlets very flat on the lower surface, 2 to 4 mm. wide, 0.5 
to 1.2 dm. long, remotely forked, the simple terminal divisions much 
elongated, mostly 4 to 10 cm. long: peduncles o.5 to 8 (average 3) 
cm. long, with 1 to 3 (very rarely more) strobiles.— Spec. ii. 1104 (excl. 
pl. Dill.) ; Druce, Jour. Bot. xx. 321, t. 233; Fl. Dan. xv. t. 267 1. 
L. complanatum, form, Lloyd & Underwood, Bull. Torr. Club, xxvii. 
164.— Northern Europe and Asia. In America from Exploits River, 
NEWFOUNDLAND (Robinson & Schrenk) and Davis Inlet, LABRADOR 
(Sornborger, no. 56x.) to Lake Lindeman, ALASKA (Schwatka, no. 
21); south to Bald Head, Tobique River, New BRUNSWICK (Hay, 
no. 86), Grand Falls (Robinson & Fernald); Fort Kent, MAINE 
(Williams, Robinson, & Fernald), Island Falls (Fernald); upper 
Flathead River, Montana (Candy, no. 399); Lake Pend d’Oreille, 
InAHo (Heller, no. 770). Occasional forms have the peduncle 
reduced or quite wanting, when the plant approaches Z. alpinum. 
Such specimens may usually be distinguished from that species by 
the coarser and looser habit, broader and flatter branches, and 
longer strobiles. 
Var. flabelliforme. Branches mostly spreading or recurved, fla- 
belliform, 2.5 to 7 cm. long, the branchlets 1.5 to 3 mm. broad, 
