Lycopodiaceae - clubmoss family
[information to be added]

Maine is home to 14 species in 5 genera (hybrids excluded). If you know which species you have or are interested in learning about, click on the appropriate link from the species list below. Otherwise, to determine which genus your clubmoss belongs to, refer to the table below the species list.

   Dendrolycopodium (3 species)
      Dendrolycopodium dendroideum - prickly tree-clubmoss
      Dendrolycopodium hickeyi - Hickey’s tree-clubmoss
      Dendrolycopodium obscurum - flat-branched tree-clubmoss
   Diphasiastrum (4 species)
      Diphasiastrum complanatum - northern ground-cedar
      Diphasiastrum digitatum - southern ground-cedar
      Diphasiastrum sitchense - Sitka ground-cedar
      Diphasiastrum tristachyum - blue ground-cedar
   Lycopodiella (3 species)
      Lycopodiella alopecuroides - foxtail bog-clubmoss
      Lycopodiella appressa - appressed bog-clubmoss
      Lycopodiella inundata - northern bog-clubmoss
   Lycopodium (2 species)
      Lycopodium clavatum - common clubmoss
      Lycopodium lagopus - one-cone clubmoss
   Spinulum (2 species)
      Spinulum annotinum - interrupted clubmoss
      Spinulum canadense - interrupted clubmoss

red font = character state unique or nearly so	upright shoot morphology	char. 2	char. 3	char. 4	char. 5	char. 6
Dendrolycopodium	conspicuous main axis with repeatedly forked branches
Diphasiastrum	conspicuous main axis with repeatedly forked branches
Lycopodiella	unbranched
Lycopodium	1–6 branches
Spinulum	forked near base

Dendrolycopodium (tree-clubmoss)
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red font = character state unique or nearly so	upright shoot main axis trophophyll orientation	char. 2	char. 3	char. 4	char. 5	char. 6
D. dendroideum	spreading at angle of 45–90°
D. hickeyi	diverging at angle of 0–30°
D. obscurum	diverging at angle of 0–30°

Dendrolycopodium dendroideum (prickly tree-clubmoss) - [information to be added]
   
(click on an image to enlarge)

Dendrolycopodium hickeyi (Hickey’s tree-clubmoss) - [information to be added]

Dendrolycopodium obscurum (flat-branched tree-clubmoss) - [information to be added]

(click on image to enlarge)

Diphasiastrum (ground-cedar)
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red font = character state unique or nearly so	char. 1	char. 2	char. 3	char. 4	char. 5	char. 6
D. complanatum
D. digitatum
D. sitchense
D. tristachyum

Diphasiastrum complanatum (northern ground-cedar) - [information to be added]

Diphasiastrum digitatum (southern ground-cedar) - [information to be added]

(click on image to enlarge)

Diphasiastrum sitchense (Sitka ground-cedar) - [information to be added]

Diphasiastrum tristachyum (southern ground-cedar) - [information to be added]

Lycopodiella (ground-cedar)
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red font = character state unique or nearly so	char. 1	char. 2	char. 3	char. 4	char. 5	char. 6
L. alopecuroides
L. appressa
L. inundata

Lycopodiella alopecuroides (foxtail bog-clubmoss) - [information to be added]

Lycopodiella appressa (appressed bog-clubmoss) - [information to be added]

Lycopodiella inundata (northern bog-clubmoss) - [information to be added]

Lycopodium (clubmoss)
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	cone number	upright shoot branch number	trophophyll length	trophophyll orientation	char. 5	char. 6
L. clavatum	(1–)3–5	3–6	4–6 mm	spreading to ascending
L. lagopus	1(–2)	1–3(–4)	3–5 mm	ascending to appressed

Lycopodium clavatum (common clubmoss) - [information to be added]

(click on image to enlarge)

Lycopodium lagopus (one-cone clubmoss) - [information to be added]

Spinulum (interrupted-clubmoss)
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	char. 1	char. 2	char. 3	char. 4	char. 5	char. 6
S. annotinum
S. canadense

Spinulum annotinum (common interrupted-clubmoss) - [information to be added]

Spinulum canadense (northern interrupted-clubmoss) - [information to be added]

Note:
   1. Taxonomy and nomenclature follow Flora Novae Angliae by Arthur Haines (2011, Yale University Press, ISBN 978-0-300-17154-9).