78 MICHIGAN SURVEY, 1905. 



40. Juniperus nana Willd. Low Juniper. Characteristic of the ''bald" 

 areas of the mountain top, III. 1, 2, 4, 5, 6, spreading out from the crevices 

 as circular mats over the rocks. 



Taxdceae Lindl. Yew Family. 



41. Taxus canadensis Marsh. Ground Hemlock. Forms, with young 

 Sugar Maples, the principal undergrowth of the hardwood forest, II. 2, 



IV. 3, VI. 



Naiadaceae Lindl. 



42. Potamogeton natans L. Common Floating Pond- weed. Occasional 

 in Carp river, IV. 1, and forms a well defined zone in shallow water about 

 the margin of Carp Lake, V. L 



Alismaceae DC. Water-Plantain Family. 



43. Sagittaria sp. Arrow-head. Near the margin of the water on the 

 mud flats, IV. 1, and delta, V. 2, of Carp river. 



Vallisneriaceae Dumort. Tape-grass Family. 



44. ValUsneria spiralis L. Tape-grass. Forms extensive mats in the 

 shallow w^ater at the west end of Carp Lake, V. 1, and occasionally about the 

 margin of Little Carp Lake, VII. L 



Gramineae Juss. Grass Family. 



45. Panicuni xanthophysum A. Gray. Slender Panicum. In the rock 

 crevices on the mountain top, III. 2, 5, 6. 



46. Cinna latifolia (Trev.) Griseb. Occasional in the hardwood forest, 

 II. 2, IV. 3, and along the banks of Carp creek, VI. 



47. Agrostis hyemalis (Walt.) B. S. P. Rough Hair-grass. On the delta 

 of Carp river, V. 2, and in the beaver meadow on Little Carp river, VII. 2. 



48. Calamagrostis canadensis (Michx.) Beauv. Blue Joint-grass. In 

 the Cassandra zone, on the dryer parts of the mud flats, IV. 2, and delta 



V. 2, of Carp river, and in the beaver meadow on Little Carp river, VII. 2. 



49. Deschampsia flexuosa (L.) Trin. Wavy Hair-grass. In the cassandra 

 zone, IV. 2, and on the delta, V. 2, of Carp river; also in the beaver meadow, 

 VII. 2, on Little Carp river. 



50. Panicularia canadensis (Michx.) Kuntze. Rattlesnake-grass. Cas- 

 sandra zone, IV. 2, and delta, V. 2, of Carp river; also in the beaver meadow, 

 VII. 2, on Little Carp river. 



Cyperaceae J. St. Hil. Sedge Family. 



51. Didichium arundinaceum (L.) Britton. Dulichium. Near the sub- 

 merged margins of the mud fiats and deltas of Carp and Little Carp rivers. 



52. Scirpus cyperinus (L.) Kunth. Wool-grass. In the cassandra zone 

 and on the mud flats, IV. 2, and delta, V. 2, of Carp river; and on the mud 

 fiats and beaver meadow along Little Carp river, VII. 2. Also along the 

 bank of Carp creek, VI. 



53. Carex monile Tuckerm. A prominent sedge in the beaver meadow 

 on Little Carp river, VII. 2. '** 



54. Carex riparia Curtis. In the cassandra zone and on the mud flats, 



