CATALOGUE OP PLANTS. 51 



418. H. orbiculata Torr. 



Deep rich woods intermingled with pine. Mid-June-July. 

 Mill Creek woods; woods near West Bridge St. Ferry (O.H.); 

 East St. Pinery (Miss Mary Dickerson); woods along the Thorn- 

 apple Kiver, Well distributed, but not abundant at any station. 



419. H. psy codes Gray. 



In meadows, swamps, and wet woods; formerly frequent, be- 

 coming occasional. July-Aug. 



420. H. tridentata Hook. 



H. clavellata (Michx.) Spreng. 

 On the bank of a spring brook in Burton Ave. Swamp (O.H.). 

 Rare. July. 



421. H. virescens Spreng. 

 ■ IT. flava (L.) Gray. 



In moist soil; scarce. July. 



Diamond St. Swamp, City (O.H.); near Fisher Station (R.E. 

 Matteson); Burton Ave. Swamp (M.&C); south branch of 

 Lamberton Creek, near Mud Lake, Grand Rapids (S,0,L,). 



LIPARIS L, C. Richard. 

 Leptorchis Thouars. 



422. L. Loeselii L. C, Richard. Twayblade. 

 In wet soil; rare. June. 



A few plants occur along the shore of Campau Lake, 



MICROSTYLIS Nutt. Addkr's-Mouth. 

 Achroanthes Raf. 



423. M. ophioglossoides Nutt. 



A. loiifolia (Michx.) Raf. 

 Sphagnous bogs; rare. 



Two plants were found at Saddle-Bag Swamp, Aug. 12, 1893 

 (O.H.); this station was destroyed in 1895. 



