Selaginella arenicola subsp. arenicola

L. Underwood
Endemic
Treatment appears in FNA Volume 2.

Leaves (aerial stems) usually tightly appressed; base conspicuously pubescent. Strobili sometimes with apical vegetative growth, distinctly larger in diameter than subtending stem. Sporophylls abruptly tapering toward apex; apex often recurved.


Habitat: Mostly on dry, exposed sand dunes, white sand, or sandy soil
Elevation: 0 m

Discussion

Selaginella arenicola subsp. arenicola usually has more slender (1 mm diam.) stems than subsp. riddelli (stems more than 1 mm diam.). In Georgia, many forms intermediate between the two subspecies have been reported.

Selected References

None.

Lower Taxa

None.

"thick" is not a number.

Bristled (?) +, Attenuate (?) +  and Plane (?) +
Iván A. Valdespino +
L. Underwood +
decurrent +  and cuneate +
0.085 cm0.85 mm <br />8.5e-4 m <br /> (0.09 cm0.9 mm <br />9.0e-4 m <br />) +
white;whitish +
0.025 cm0.25 mm <br />2.5e-4 m <br /> (0.085 cm0.85 mm <br />8.5e-4 m <br />) +
transparent +
dentiform +
0.002 cm0.02 mm <br />2.0e-5 m <br /> (0.007 cm0.07 mm <br />7.0e-5 m <br />) +
Fla. +  and Ga. +
Mostly on dry, exposed sand dunes, white sand, or sandy soil +
monomorphic +
fertile +  and vegetative +
linear-lanceolate;linear +
ciliate +  and serrate +
ciliate +  and short-ciliate +
globose +, ovoid +  and tetrahedral +
tetrahedral +
Bull. Torrey Bot. Club +
alternating +
0.02 cm0.2 mm <br />2.0e-4 m <br /> (0.033 cm0.33 mm <br />3.3e-4 m <br />) +
adjacently +  and monomorphic +
fertile +  and vegetative +
lanceolate +, triangular-lanceolate +  and scale-like +
0.4mm;0.5mm +
rhizomatous +
budlike +  and symmetric +
dimorphic +, climbing +  and cespitose +
decumbent;creeping;prostrate +
aerial +  and underground +
ascending;erect;ascending +
3 cm30 mm <br />0.03 m <br /> (3.5 cm35 mm <br />0.035 m <br />) +
quadrangular +
1 cm10 mm <br />0.01 m <br /> (3 cm30 mm <br />0.03 m <br />) +
Selaginella arenicola subsp. arenicola +
Selaginella arenicola +
subspecies +
straight +
branched +  and not articulate +
erect +  and creeping +
branched +  and not articulate +
erect +  and creeping +
differentiated +
perennial +  and annual +
on rock +  and terrestrial +
epiphytic +  and hemiepiphytic +
12 +, 11 +, 10 +, 9 +, 8 +  and 7 +