63 



C arctaia, Boott, van Faxoni, Bailey, 639. 



C. arctata X Jiexilis^ Bailey, 612. 



C debilis, Michx. var. Rtidgei, Bailey, 6ioa, 637, 638, 638a. 



C, gracillimay Schw. 655. Common. 



C, gracillimay Schw. var. humilis, Bailey, 656, 



C. Davisii, Schw. & Torr. 700. 



C. Crawei^ Dewey, 701. 



C. granulans^ Muhl. 704. 



C, Jlava, Linn. 670, 671, 672, 672a 673. Common. 



C. pallescens, Linn. 570. 



C. laxijlora, Lam. var. varians, Bailey, 657, 713. Common. 



C. Saltuensis, Bailey, 243. 



C. attrea^ Nutt. 635, 636. Common, 



C, pedtinciilata^ Muhl. 41. Common. 



C, Pemis^lvanicay Lam. Common in sand. 



C. communis, Bailey, 652, 652a. 



C, communis, Bailey, var. Wheeleri, Bailey, 653. 



C. varia, Muhl. i^C, Emmonsii, Dewey), 40. 



C. deflexa, Hornem. var. media, Bailey, 244. Bluffs. 



C, Jamesii, Schw. 698. Lifrequent. 



C. polytrichoides, Muhl. 520. Common, 



C, stipata, Muhl. 522. Common. 



C, vtilpinoidea, Michx. 521. Common. 



C. tend la, Schk. 523, 



C, exilis, Dewey, 389. 



C. echinata, Murr. var. cephalantha, Bailey, 555. 



C. echinata, Murr. var, microstachys, Boeckl. 556. 



C. canescens^ Linn. 604. 



C, canescens, Linn. var. vulgaris, Bailey, 605. Frequent in 



swamps. 



C. canescens, Linn. var. alpicola, Wahl. 625. Frequent on dry, 



' sterile hills. 



C. cafiescens, Linn. var. polystachya, Boott, 624. 



C. trisperma, Dewey, 524, 



C. bromoides, Schk. 702. Infrequent 



C. Deweyana, Schw. 603, 603 a. 



C, tribuloides, Wahl. var. redticta, Bailey, 685. 



C. tribuloides, Wahl. var. Bebbii, Bailey, 684, 684a, 683c. 



