Sisyrinchium 



Orchidaceae 



335 



50 



Map 687 



Sisyrinchium at lanticum Bic knell 



o 50 



Map 688 



Cypripedium reginae Walt. 



Miles 



o 'sd 



Map 689 



Cypripedium candidum Muhl. 



to the last named species. Peattie reported this species from the Calumet 

 Region where I, also, have found it. It is infrequent in moist soil on the 

 low, open dunes along north Clark Street in Gary about an eighth of a 

 mile south of Lake Michigan. Not yet known from any other county. 



« 



Newf. to B. C, southw. to Va., Pa., Mich., Minn., and in the Rocky Mts. 



3. Sisyrinchium graminoides Bickn. (Sisyrinchium gr&mineum Curtis.) 

 Map 686. Infrequent to rare in the northern part of the state, becoming 

 frequent in the southern part. This species always has yellow roots, pre- 

 fers a slightly acid soil, and is generally found in dry places in open wood- 

 land and clearings, along fence rows, and infrequently in open places with 

 herbs and grasses of equal height. 



N. S. to Minn ; southw. to Fla. and Tex. 



4. Sisyrinchium atlanticum Bickn. Map 687. This is primarily an 

 Atlantic coast species that has possibly migrated into Indiana from the 

 Mississippi Valley. In addition to the records on the map, it has been 

 reported from Porter and White Counties. The species seems to be entirely 

 distinct and is local in Indiana. It is generally found in moist, sandy soil, 

 but my Posey County specimen was found in a moist, white clay loam on 

 the second bottom along the Ohio River south of Caborn in a hayfield 

 where it formed a large colony. 



Maine to Fla., westw. to the Mississippi Valley and northw. to Ind. 

 and Mich. 



50. ORCHIDACEAE Lindl. Orchid Family 



Plants with green leaves present at flowering time. 

 Flower with a spur. 

 Leaves all basal, 2. 



Blades usually large and rather fleshy, oblong-obovate; flowers with pinkish 



hoods and white or spotted lips, expanding mostly in May 



1396. Orchis, p. 339. 



