Lycopodium hickeyi, Pennsylvania Club-Moss

Lycopodium hickeyi
photos by Dennis Kalma
 
Scientific Name:
 
Common Name:
Family:
ITIS Number:
NRCS Symbol:
  Lycopodium hickeyi W.H. Wagner,     Beitel & Moran
Pennsylvania Club-Moss
Lycopodiaceae (club-mosses)
503611
LYHI2

 

Plant: to 30 cm tall, thickly branched

Horizontal Stems: multiple plants arise from underground branching stems

Upright Stems: to 30 cm tall; branches and rebranches from a single stem

Leaves: 5 to 7 mm long, narrow lance-shaped with smooth sides and sharp point; divergent from stem axis; arranged around stem with 1 row on top, 2 on each side, and 1 row on the bottom; leaves on the main stem below the first branch are pressed to the stem and are not prickly

Strobilus: upright cylindrical, 3 to 4 cm long; yellowish to tan; borne at the tips of the upper branches; may be several on each plant

Sporophyll (the individual units of the strobilus): almost round with sharply pointed tip, almost overlapping, 3 to 4 mm long; translucent yellowish; spore cases bean-shaped, rounded

Habitat: dry open woodlands and second growth areas

Similar Species: the only other species found in our area with an upright Christmas tree shape is Lycopodium dendroideum, Northern Tree Club-Moss; it is very similar but has the leaves arranged around the stem with 2 rows on top, 1 on each side, and 2 rows on the bottom; also in that species the leaves on the main stem below the first branch diverge from the stem and are slightly prickly

  stem
stem
  Lycopodium hickeyi - range map
Flora of North America
 
strobilus
strobilus
  sporophylls
sporophylls