64 Lycopodiaceae Lycopodium 



Horizontal stems on or near the surface of the ground; branchlets yellowish 



green, (1.5) 2-3 mm wide; leaves on the ventral side of the branchlet 



much shorter than those of the dorsal side. 



Branchlets with new growth clearly separated from the old growth by a 



constriction; branches mostly horizontal, or some erect, irregularly 



divided; spikes 1-3. (See excluded species no. 16, p. 1021.) 



L. complanatum. 



Branchlets lacking new growth at the tips, having attained their full growth 

 the first year, therefore lacking constrictions; branches erect, the 

 branchlets disposed in the form of a funnel, appearing fan-shaped in 

 herbarium specimens; spikes 1-6, usually 4 5. L. flab elli forme. 



1. Lycopodium Selago L. var. patens (Beauv.) Desv. (Lycopodium 

 porophilum Lloyd & Underw.) Map 51. I have this variety from three 

 places in Crawford County where I found it in dry soil in pockets of cliffs 

 of the knobstone or sandstone, and from Martin County where it was found 

 in dry soil pockets of the sandstone cliffs about a mile north of Shoals. 



Que. to Wis., southw. to n. Vt. and Ky. 



2. Lycopodium lucidulum Michx. Shining Clubmoss. Map 52. Very 

 local. It grows in deep humus, sometimes forming large colonies. In the 

 lake area it is generally found in decadent tamarack bogs and southward 

 in moist, shaded woodland, although my Clay County specimen was found 

 in the open among rocks along Croy Creek. 



Newf. to B. C, southw. to N. E., N. Y., Ind., Iowa, and Wash., and in 

 the mts. to S. C. 



3. Lycopodium inundatum L. Map 53. Very local. It grows in wet, 

 somewhat acid sandy soil, usually on the borders of lakes and in the dunes. 

 It has also been reported from Marshall County. I have twice found it 

 associated with cranberry and hair-cap moss. In 1937 I revisited the 

 Steuben County station and found that it has been exterminated there. 



Newf. to Alaska, southw. to N. J., Pa., 111., Idaho, and Wash. ; also in 

 Eurasia. 



4. Lycopodium obscurum L. Groundpine. Map 54. Very local. In 

 addition to my specimens it has been reported from Lake, Montgomery, 

 Porter, and St. Joseph Counties. One of my specimens is from a small 

 colony at the base of a north beech slope, bordering a soft maple swamp, 

 and the other is also from a swamp bordering a lake. 



My specimens are not typical and seem to be intermediate between the 

 species and the var. dendroideum (Michx.) D. C. Eaton. 

 Newf. to Alaska, southw. to N. C. and Ind. 



5. Lycopodium flabelliforme (Fern.) Blanchard. (Rhodora 13: 168-171. 

 1911.) (Lycopodium complanatum var. flabelliforme Fern.) Map 55. 

 Extremely local. Found on moist, rocky slopes. 



This species is regarded by many authors as a variety of Lycopodium 

 complanatum. Blanchard (Pvhodora 13: 168-171. 1911) made a special 

 study of this species and L. complanatum in the field, and after nearly ten 

 years' observation, concluded that the two were distinct species. Victorin 

 (Contrib. Lab. Bot. Univ. Montreal, no. 3: 62-63. 1925) confirms Blanch- 



