Log In New Account Sitemap
  • Home
  • Search
    • Search Collections
    • Map Search
    • Dynamic Species List
    • Exsiccati
    • Taxonomic Explorer
  • Images
    • Image Browser
    • Search Images
  • Species Checklists
    • North America
  • Crowdsource
  • Contacts
    • Partners
  • Acknowledgements
Dendrolycopodium obscurum (L.) A.Haines  
Family: Lycopodiaceae
[Lycopodium dendroideum var. obscurum (L.) Torr. ex Beck, moreLycopodium obscurum L., Lycopodium obscurum f. breve (Farw.) M.Broun, Lycopodium obscurum f. brevispicatum (Farw.) M.Broun, Lycopodium obscurum f. exsertum Vict., Lycopodium obscurum f. foliaceum (Farw.) M.Broun, Lycopodium obscurum f. monostachyon Vict., Lycopodium obscurum f. parvispicatum (Farw.) M.Broun, Lycopodium obscurum f. proliferum Vict., Lycopodium obscurum var. obscurum]
Dendrolycopodium obscurum image
  • FNA
  • Gleason & Cronquist
  • Resources
Warren H. Wagner Jr. & Joseph M. Beitel in Flora of North America (vol. 2)
Horizontal stems subterranean. Upright shoots treelike, many branched, branchlets numerous and strongly differentiated; annual bud constrictions absent; leaves on main stem below lateral branchlets tightly appressed, needlelike, 3.5--4.5 X 0.6--0.7 mm, soft. Lateral branchlets flat in cross section, 6--9 mm diam.; annual bud constrictions inconspicuous. Leaves in 6 ranks, 1 on upperside, 4 lateral, ascending-spreading, 2.5--5.5 X 0.5--1.2 mm, and 1 on underside, much smaller than others, ascending; margins entire; apex lacking hair tip. Strobili 1--6 at tip of shoot, sessile, 12--60 mm. Sporophylls 3 X 2 mm, apex long, gradually narrowing. 2 n = 68. Rich hardwood forests and successional shrubby areas; 0--1600 m; N.B., N.S., Ont., Que.; Ala., Conn., Del., Ga., Ky., Maine, Md., Mass., Mich., Ohio, Pa., N.H., N.J., N.Y., N.C., R.I., S.C., Tenn., Vt., Va., W.Va., Wis.
Vascular plants of NE US and adjacent Canada
Prostrate stems deeply subterranean, elongate, branched; erect stems scattered, simple below, freely branched above, to 3 dm, the main axis 2 mm thick, the branchlets terete or flattened; lvs numerous, shining, 6-8-ranked, linear-subulate, all alike or ±dimorphic, 4.6 נ0.8-1.2 mm, entire, firm, sharp-pointed; cones terminating some of the branches; sessile, 1-4 cm, 5-7 mm thick; sporophylls yellowish, broad-based, abruptly acuminate, with hyaline, inconspicuously erose margins; sporangia reniform, 1.5-2 mm wide; spores with the commissural faces more finely reticulate than the outer, otherwise as in no. 9 [Lycopodium annotinum L.]; 2n=68. Moist woods and bog-margins in acid soil; boreal Amer. and Asia, s. in e. U.S. to n. Ga., Ala., Ind., and Mo.

Gleason, Henry A. & Cronquist, Arthur J. 1991. Manual of vascular plants of northeastern United States and adjacent Canada. lxxv + 910 pp.

©The New York Botanical Garden. All rights reserved. Used by permission.
Dendrolycopodium obscurum
Open Interactive Map
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Dendrolycopodium obscurum image
Click to Display
100 Initial Images
- - - - -
View All Images

The PCC, and this data portal, were made possible by funding from the National Science Foundation’s Advancing Digitization of Biological Collections (ADBC) program, grant numbers 1802504, 1802352, 1802134, 1802033, 1802270, 1802255, 1802239, 1802446, 1802305.
The pteridoportal taxonomic thesaurus is based on the Checklist of Ferns and Lycophytes of the World, generously provided by Michael Hassler.