778 



INDEX. 



Thalictrum 



platycarpum Greene, 517 

 polycarpum Watson, 517 

 polygamum Muhl., 514 



var. macrostylum Robinson, 



5H 

 Pringlei Wats., 518 



var. reticulaturn Rose, 518 

 pubigerum Benth., 519 

 pubigerum Pringle, 518 

 purpurascens L-, 363, 388, 427, 



5 r 3. 555, 582 



var. ceriferum Austin, 514 

 purprtreum Hort., 513 

 purpureum Schang., 513 

 revolutum DC., 513 

 revolutum Lee., 514 

 Richardsonii Gray, 512 

 rugosum Pursh, 513 

 saxatile Vill., 513 

 saxatilis Hort., 513 

 sparciflorum Turcz., 512 

 speciosum Hort., 513 

 tomentellum Robinson & Seat., 



52i 



venulosum Trelease, 516 

 Wrightii Gray, 517, 522 

 Thelocarpon prasinellum Nyl., 18, 



228, 274, 306, 327 

 Theloschistes, 672 



concolor (Dicks.) Tuck., 13, 238, 



302, 304, 309, 668, 670, 685 

 var. effusa Tuck., 310, 670, 



685 

 chrysopthaltnus (L.) Norm., 302, 



305, 309, 670, 675, 685 

 lychneus (Nyl.) Tuck., 13, 244, 



292, 300, 302, 309, 666, 670, 685 

 polycarpus (Ehrh.) Tuck., 244, 



302, 304, 309, 670, 671, 685 

 Thlaspi arvense L., 191, 582 

 Thuidium, 36 



abietinum Sch., 49 

 philiberti Limpr., 49 

 recognitum Lindb., 49 

 Thuja occidentalis L., 225 

 Thymeleacese, 398 

 Tilia, 429, 565, 566 



americana L., 363, 366, 396, 428, 



43, 586 

 Tiliaceae, 396, 586 



Toxylon pomiferum Raf., 71, 84, 87, 



93, 130, 131, 132, 133 

 Tradescantia, 54 



reflexa Raf., 377 



virginiana L,., 377 



Triadenum virginicum (L. ) Raf., 586 

 Trifolium hybridum L,., 393 



pratense, 622, 627 



repens L., 393, 541, 622 

 Triglochin maritima L,., 572 

 Trillium cernuum L., 363, 378 



erectum L,., 363, 378 

 Triosteum perfoliatum L., 363, 408 

 Triphragmium Link., 537, 554 



clavellosum Berk., 554 

 Triticum vulgare L., 548 

 Typha latifolia L-, 373, 626, 624 

 Typhacese, 373 



Uimacese, 70, 89, 383 

 Ulmus, 85, 324 



americana L-, 70, 87, 89, 130, 132, 



!33. 358, 363, 383 

 fulva Michx., 70, 363, 383, 629 

 racemosa Thomas, 383 

 Ulota crispa Brid., 41 

 curvifolia Brid., 41 

 hutchinsiae Sch., 41 

 Ulotrichiaceae (Kg.) Borzi, 26 

 Umbelliferse, 89, 399, 588 

 Umbilicaria, 4, 5, 6, 221, 236, 282, 



662 



dillenii Tuck., 3, 14, 249 

 hyperborea Hoffm., 228, 250 

 muhlenbergii (Ach.) Tuck., 222, 



224, 249 

 pustulata (L. ) Hoffm. var. papu- 



losa Tuck., 224, 250 

 vellea (L.) Nyl., 233, 249 

 Uncinula, 424 



clintonii Peck, 428 

 necator (Schw.) Burrill, 429 

 salicis (DC. ) Wint., 428 

 Unifolium canadense (Desf. ) Greene, 



378, 577 

 Urceolaria, 657 



actinostoma Pers., 281, 282, 287, 



288, 320 



scruposa (L.) Nyl., 16, 223, 224, 

 263, 286, 293, 296, 301, 320, 668, 

 696 



