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Cladonia rangiferina – whitish and finely structured thallus

Cladonia subtenuis – greenish, finely structured thallus. Cladonia rangiferina – whitish and finely structured thallus. Cladonia caroliniana - fat thallus, greenish. Grimmia laevigata. Pioneer species on granite Tiny, low growing Hoary, frosty appearance. Grimmia laevigata.

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Cladonia rangiferina – whitish and finely structured thallus

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  1. Cladonia subtenuis –greenish, finely structured thallus Cladonia rangiferina –whitish and finely structured thallus Cladonia caroliniana -fat thallus, greenish

  2. Grimmia laevigata • Pioneer species on granite • Tiny, low growing • Hoary, frosty appearance Grimmia laevigata Xanthoparmelia conspersa – prostrate on open rocks, has pale surface and a shiny black underside

  3. Polytrichum commune • Large moss with upright “stems” • Gametophyte is dominant • Photo shows sporophytes growing out of some gametophytes

  4. Sphagnum sp. • Epidermis cells fill with water, hence wet even when the area is dry • Dreadlock looking • Dead plants are “peat moss” used as soil amendment

  5. Alnus serrulata • Has nitrogen fixing bacteria (but not legume) • Female inflorescences look like pine cones • Male catkins are long and the females are short

  6. Diamorpha smallii • Found in shallow soil (annual) • Red succulent leaves • White flower • CAM

  7. Erythronium sp. • 2 mottled leaves • Large yellow flower • Spring herb: takes advantage of early phenoseason sun • Seeds dispersed by ants (myrmecochory!)

  8. Minuartia uniflora and M. glabra Annuals Granite outcrop endemics! M. uniflora –smaller flower M. glabra- larger flower

  9. Hypericum frondosum • Grows in deeper soils • Has boat-shaped leaves • Peely bark- smooth once it peels • Bright yellow flowers

  10. Krigia virginica • Found in shallow soils (annual) • Toothed leaves

  11. Manfreda virginica • Relative of agave • Fairly long and thick spine-tipped fleshy leaves • Monocarpic perennial

  12. Opuntia compressa • Spines • CAM • Survives cold winters without freezing using freezing point depression (lots solutes in cells)

  13. Packera tomentosa • Vertical leaves (avoids solar input at mid-day) • Relatively long white hair on leaves (increases albedo!)

  14. Saxifraga virginiensis • 5-petaled white flower • Hairy flower stalk • Rosette forming cluster of broad leaves • Bottom of leaf is reddish

  15. Isoetes sp. • Looks like grass (long thin leaves) • Sporeforming plant (member Lycophyta: club moss phylum) • Has a bulbous base

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