LTCOPODTACEJE. (CLTTB-MOSS FA JULY.) 603 



2. "L. Selfisro, L. Stems thick and rigid, erect, fork -branched, forming a 

 level-topped cluster (3' 6' high) ; leaves spreading, lanceolate, pointed, entire. 

 Tops of high mountains, Maine to New York, on the Alleghanies southward ; 

 also shore of Lake Superior, and northward ; rare : both the variety with more 

 erect, and that with widely spreading, leaves. (Eu.) 



2. Sporangia borne only in the axils of the upper (bracteal) leaves, thus forming 

 terminal spikes or catkins. 



# Leaves of the creeping sterile and the upright fertile stems or branches, and those of 



the simple spike all alike, many-ranked (sporangia opening near the base). 



3. It. illUlldatiim, L. Dwarf; creeping sterile stems forking, flaccid ; 

 the fertile solitary (l'-4' high), bearing a short thick spike; leaves lanceolate or 

 lance-awl-shaped, acute, soft, spreading, naked, or sometimes bearing a few minute 

 spiny teeth. Leaves (curving upwards on the prostrate shoots) narrower in the 

 American than in the European plant (perhaps a distinct species), and passing 

 into the var. BiGEL6vn, Tuckerm. : with fertile stems 5' -7' high, its leaves 

 more awl-shaped and pointed, sparser and more upright, often somewhat teeth- 

 bearing. (L. Carolinianum, Bigel, not of L.) Sandy bogs, northward, rare : 

 the var. from New England to New Jersey and southward, near the coast. 

 Aug. (Eu.) 



4. It. alopecuroides, L. Stems stout,, very densely leafy throughout ; 

 the sterile branches recurved-procumbent and ci'eeping ; the fertile of the same 

 thickness, 6' -20' high ; leaves narrowly linear-awl-shaped, spinulose-pointed, spread- 

 ing, conspicuously bristle-toothed below the middle ; those of the cylindrical spike ivith 

 long setaceous tips. Pine-barren swamps, New Jersey to Virginia, and south- 

 ward. Aug., Sept. Stems, with the dense leaves, ^' thick ; the comose spike, 

 with its longer spreading leaves, f to 1' thick. 



* * Leaves (bracts) of the catkin-like spike scale-like, imbricated, yellowish, ovate or 



heart-shaped, very different from those of the sterile stems and branches. 



- Spikes sessile (branches equally leafy to the top), single. 



5. It* nil fioti Bill ill, L. Much branched ; stems prostrate and creeping 

 (l-4 long) ; the ascending branches similar (5'-8' high), sparingly forked, the 

 sterile ones making yearly growths from the summit; leaves equal, spreading, in 

 about 5 ranks, rigid, lanceolate, pointed, minutely serrulate (pale green) ; spike 

 solitary, oblong-cylindrical, thick. Var. PTJNGEXS, Spring, is a reduced sub- 

 alpine or mountain form, with shorter and more rigid-pointed erectish leaves. 

 (A 7 ar. montanum, Tnckcrm.) Woods ; common northward: the var. on the 

 White Mountains, with intermediate forms around the base. July. (Eu.) 



6. Li. deildroideilm, -Miohx. (GKOUKD-PINE.) Stuns upright (6'- 

 9' high) from a subterranean creeping rootetock, simple brloic, and clothed with 

 homogeneous lanceolate-linear acute entire leaves appressed-erect in 4-6 rows, 

 bushy-branched at the summit ; the crowded branches spreading, fan-like, with the 

 lower row of leaves shorter and the lateral spreading, in var. onscfjRUM 

 appearing flat, from the leaves of the upper side being also shorter and ap- 

 pressed. (L. obscurum, L.) Moist wood-;. Aug. Remarkable for its tree, 

 like growth. Spikes cylindrical, 4-10 on each plant. 



