184 
523 . 
524 . 
525 . 
526 . 
527 . 
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531 . 
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539 . 
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541 . 
542 . 
PROCEEDINGS OF THE NATURAL [APRIL, *88. 
L. polyrrhiza, E. Mentioned by A. Conrath as occurring in the 
county. 
TYPHACE.E. 
Typha latifolia, L. (Cat-tail.) Common throughout the count}'. 
Sparganium eurycarpum, Engl. (Bur-seed.) Occasional in the 
Menomonee Valley; also S. 
NAIADACE.E. 
Potamogeton natans, C. (Pond-weed.) Common in the differ- 
ent streams of the county. 
P. pauciflorus, Pursh. Within the City limits. (N. B. This list 
of the species of Potamogeton is very incomplete.) 
ALISMACE.E. 
Alisma plantago, L. var. Americanum, Gray. (Water Plantain.) 
Common everywhere in ditches, etc. 
Sagittaria vanabilis, Engl. (Arrow-head.) This species with 
many of its varieties is common throughout the county. 
HYDROCHARIDACE.E. 
Anaeharis Canadensis, Planchon. (Water-weed.) Common in 
all the waters of the county. 
Vallisneria spiralis, L. (Tape Grass.) I„ the Milwaukee River 
m the N. part of the county. 
Orchis spectabilis, L. (Showy Orchis.) Scattered through th 
county; rare. 
Habenaria viridis. R R r u 
and W ‘ r * b T aeteata, Reichb. Occasional S 
H. hyperborea, R. Br. In 4 - , , 
where S. and S. W. ‘ tamarack swamp and else 
H. dilatata, Gray. Also in Larkin’s swamp 
H. Hookerh Forr. At St. Francis Seminar 
H. laeera, R. Br. I„ Larkin’s tamarack swamp 
H. psychodes, Gray. (Purnle nv* j ^ 
r . m „, P “ r,re ” 
of the Wis 1 conmrituse. Ut ( t T N Brni a SmaU ** 
Calopogon pulehellus, R. Br In , 1 ™ * 
Corailorhiza innata, R. Br ,n , Same place ' 
rack swamp. V oral-root.) I n Larkin’s tama 
Cypnpedium parviflorum, Salisb re 
per.) Occasional S. and W. S ler Yellow Lady’s Slip 
