42

SEED PLANTS
(Flowering Plants)

• Pine Family: PINACEAE
  • Pines (Pinus spp.)
    • Long Leaf (P. palustris) ; 1.
    • Short-leaf (P. enchinata); 1, 17.
    • Loblolly (P. taeda); 1, 2, 17.
    • Pinon (P. edulis); 7 8, 9, 10.
    • Western Yellow (P. brachyptera); 8.
  • Spruce (Pseudotsuga taxifolia); 8 (chisos).
  • Cypress, Bald (Taxodium); 1, 2,`.2. 9, 17.
  • Cypress, Arizona (Cupressus); 8 (Chisos).
  • Cedar (Juniperus spp.); more or less present in almost all regions except 1, 4, 5; but they are particularly abundant in 6, 7, 8, 9, 10, 11, 12, 13, 14, and scattered locally in 15, 16, 17, 18. For a systematic treatment see Sargent: Manual of the Trees of North America.
• Joint-fir Family: GNETACEAE.
  • Ephedra spp.; 4, 6, 7, 8, 10, 11, 12, 13.
• Cat-tail Family: TYPHACEAE.
  • Typha spp.; in marshy open situations in all areas.
• Pond-weed Family: ZANNICHELLIACEAE.
  • Pond-weeds (Potamogeton spp.); in open fresh or slightly brackish water in all regions.
  • Sea-grass (Ruppia maritima); in quiet shallow protected sea water along the whole coast.
  • Horned Pondweed (Zannichellia palustris); in quiet fresh water, all regions.
  • Eel-grass (Zostera marina); in brackish water or sea water along the coast.
• Water-nymph Family: NAIADACEAE.
  • Water-nymph (Naias spp.); fresh or brackish water, along the coast and inland.
• Water Plantain Family: ALISMACEAE.
  • Water Plantain (Alisma sub-cordatum); fresh water marshes and in shallow water, supposedly widespread, but represented by few collections.
  • Water Plantain, Dwarf (Helianthium); shallow fresh water along the coast.
  • Bur-head (Echinodorus spp.); marshes and shallow water, along the coast and in the interior.