Primitive Plants

Quick Finder-click on the family name to jump to that part of the list

Characeae (algae) Adiantaceae (maidenhair ferns) Asplenianeae (spleenworts) Blechnaceae (deer-ferns) Dennstaedtiaceae (brackens) Dryopteridaceae (ferns) Equisetaceae (horsetails) Isoetaceae (quillworts) Lycopodiaceae (clubmosses) Lygodiaceae (climbing ferns) Ophioglossaceae (adder's tongues) Osmundaceae (royal ferns) Polypodiaceae (ferns) Selaginellaceae (spikemosses) Thelypteridaceae (ferns)

ALGAE

CHARACEAE
	Nitella flexilis	1937
	Nitella furcata	1969
	Nitella microcorpa	1939
	Nitella micronata	1937
	Chara zeylanica	1970

VASCULAR PLANTS

EQUISETACEAE
Common Horsetail	*Equisetum arvense*	1944,1946
LYCOPODIACEAE
Shining clubmoss	Huperzia lucidula	1944
Bog clubmoss	Lycopodiella inundata	1954
Running-pine	*Lycopodium clavatum*	1936,1957
Southern ground-cedar	Lycopodium digitatum	1937
Tree clubmoss	*Lycopodium obscurum*	1937
Wiry ground-cedar	Lycopodium tristachyum	1940,1943
SELAGINELLACEAE
Meadow Spikemoss	*Selaginella apoda*	1937
ISOETACEAE
Quillwort	*Isoetes engelmannii*	1937,1941
OPHIOGLOSSACEAE
Grape fern	Botrychium dissectum	1938
Rattlesnake fern	*Botrychium virginianum*	1937
Northern adder's-tongue fern	Ophioglossum pusillum	1947
OSMUNDACEAE
Cinnamon fern	*Osmunda cinnamomea*	1937
Interrupted fern	Osmunda claytoniana	1943
Royal fern	*Osmunda regalis*	1937
POLYPODIACEAE
Polypody	Polypodium virginianum	1940
DENNSTAEDTIACEAE
Hay-scented fern	*Dennstaedtia punctilobula*	1937
Bracken	*Pteridium aquilinum* (prob. var. latiusculum)	1937
ADIANTACEAE
Maidenhair fern	Adiantum pedatum	1969
ASPLENIACEAE
Ebony spleenwort	*Asplenium platyneuron*	1937
THELYPTERIDACEAE
Southern Beech fern	Phegopteris hexagonoptera	1937
New York fern	*Thelypteris noveboracensis*	1937,1960
Marsh fern	*Thelypteris palustris*	1937
Massachusetts fern	Thelypteris simulata	1945
DRYOPTERIDACEAE
Silvery spleenwort	Deparia acrostichoides	1942
Lady Fern	*Athyrium filix-femina*	1944,1960
Toothed wood fern	Dryopteris carthusiana
Crested fern	Dryopteris cristata	1936
Marginal wood fern	Dryopteris marginalis	1938
Christmas fern	*Polystichum acrostichoides*	1937
Sensitive fern	*Onoclea sensibilis*	1937
BLECHNACEAE
Net-vein chain fern	Woodwardia areolata	1937,1945,1954
Virginia chain fern	Woodwardia virginica	1937
LYGODIACEAE
American climbing fern	Lygodium palmatum

Herbarium Home Page
Patuxent Home

Patuxent Wildlife Research Center Home Page