Gymnosperms Flashcards
Cycadaceae
SAGO PALM
dioecious; trunks or subterranean stems with large coriaceous, evergreen, pinnate leaves; large, determinate pollen cones, the ovulate reproductive structures not organized as cones
Araucariaceae
ARAUCARIA
monoecious or dioecious trees leaves are evergreen, simple, spiral or opposite, and broad to acicular
Pinaceae
PINE FAMILY
mostly evergreen trees or shrubs that yield resin
the bark is either thin or thick, and scaly
Podocarpaceae
resinous, usually dioecious (rarely monoecious), trees, leaves are simple, spiral, linear, elliptic, or subulate to scale-like with “catkin-like” pollen cones
Taxaceae
YEW FAMILY
woody shrubs tress; leaves linear or linear-lanceolate, flattened, entire, acute at apex,; seeds with a hard outers layer, associated with bright colored (usually red) fleshy arils
Gnetaceae
dioecious, evergreen, mostly woody vines, seeds drupelike, enclosed in a red, orange, or yellow, fleshy (rarely corky) false seed coat
woody plants
lignophytes or lignophyta
Genus of Cycads that has bipinnately compound leaves
Bowenia
seed plants
spermatophytes or spermatophyta
Genus of a highly branches, woody tree, that has short shoots and long shoots, with distinctive obtriangular (fan-shaped), often two-lobed leaves with dichotomous venation
Ginkgo
Plants that lack flowers, ovules and seed developed on the scales of cones rather than in ovaries
Gymnosperms
This family differs from the Cycadaceae in having both male and female cones borne in a strobili
Zamiaceae
Genus of strange plant native to deserts of Namibia on southwestern Africa bearing an underground caudex that has only two leaves
Welwitschia
Genus of desert shrub recognized by the photosynthetic, striate stems and the very reduced scale-like leaves with only two or three per nodes
Ephedra
This family is thought to be the sister group to the angiosperms, the two group united by the whorled somewhat perianth-like microsporophylls in structures that may resemble flowers
Gnetaceae
