1G6 O PH I O G L O S S UM L U S I T A N I C UM.
Veins anastomosing, and without any mid-vein.
Roots thick, fleshy, brittle , aud sjireading.
Rhizoma a corm-like crown.
Stipes erect, smooth, succulent, and cylindrical.
This F e rn , known as the D w a rf A d d e r’s-tongue, has usually
solitary fronds, or occasionally two or three from the same crown.
L ength of frond from less than an inch to an inch and a
half.
F o r plants my thanks are due to Mr. James, of Vauvert.
I t may he procured of Air. Sim, of Foot’s Cray.
The illustrations are from plants in my own collection.
l lO T K V C n I UM.
GENUS II.
RO T RY C H IU A I. S w a r t z .
A SM A L L family of dwarf F erns, only one species of which
Botrychium lunaria, is a native of Great Britain.
Fronds herbaceous; fertile and sterile branches distinct, yet
on the same stem.
AVins repeatedly branched from a central costa; venules free.
The name derived from the G re ek—hotnjs, signifying a bunch
or cluster.
Sprengel enumerates—
B. lunaria, Swartz, E urope.
■— australe. B rown, New H o lland.
— matricariie, Spreng el,
— fumaria:, Sprengel, Carolina.
— ternatum, Swartz, Japan. ;
K u n z e gives—
B. australe, Brown.
•— dissectum, Muhlenberg.
— fumarioides, Willdenow, N.
America.
— gracile, K unze, No rth
America.
B. dissectum, Sprengel, No rth
America.
— virginicum, Swartz, No rth
America.
—• cicutarium, Swartz, H isp an iola.
B. lunaria, Swartz.
— ohliquum, Muhlenberg, N.
America.
—■ ruttefolium, Brown, Europe.
— virginicum, Swartz.