140 



9549 Brandegei Wats. 



9550 chrysantha Engelm. 



9551 compacta Aven Nelson 



9552 conges ta T. & G. 



9553 decapetala (Pnrsh) Urb. & Gil. 



(M. ornata T. & G.) 



9554 densa Greene 



9555 Floridana Nntt. 



9556 gracilenta T. & G. 



9557 hispida Willd. 



9558 integrifolia (Wats.) Rydb. 



(M. dispersa Wats.) 



9559 involucrata Wats. 



9560 laevicaulis (Dougl.) T. & G. 



9561 leucophylla T. S. Brandegee 



9562 Lindleyi T. & G. 



9563 lutea Greene 



9564 micrantha T. & G. 



9565 mtiltiflora (Nutt.) A. Gray 



9566 integra Jones 



9567 Nelsoni Greene 



9568 nitens Greene 



9569 nuda (Pursh) T. & G. 



9570 oligosperma Nutt. 



9571 parviflora Heller 



9572 perennis Wooton 



9573 pumila T. & G. 



9574 reflexa Coville 



9575 Rusbyi Wooton 



9576 tenerrima Rydb. 



9577 T weedy i Rydb. 



9578 Torreyi A. Gray 



9579 tricuspis A. Gray 



9580 Wrightii A. Gray 



Encnide 



9581 bartonioides Zucc. 



9582 lobata A. Gray 



9583 urens Parry 



Sympetaleia 



9584 aurea A. Gray 



DATISCACEAE 



Datisca 



9585 glomerata (Presl) B. & H. 



CACTACEAE 



Cerens 



9586 aggregatus (Engelm.) Coult. 



9587 Berlandieri Engelm. 



9588 chloranthns Engelm. 



9589 compressus Mill. 



9590 ctenoides Engelm. 



9591 dasyacanthus Engelm. 



9592 Neo-Mexicanus Coult. 



9593 dubius Engelm. 

 9394 Emoryi Engelm. 



9595 Engelmanni Parry 



9596 chrysocentrus Engelm. 



9597 variegatus Engelm. 



9598 enneacanthus Engelm. 



9599 Fendleri Engelm. 



9600 giganteus Engelm. 



9601 gonacanthus Engelm. 



9602 Greggi Engelm. 



9603 hexandrus Engelm. 



9604 Mohavensis Engelm. 



9605 Zuniensis Engelm. 



9606 monoclonus DC. 



9607 octacanthus (Muhlenpf.)Coult. 



9608 paucispinus Engelm. 



9609 pectinatus centralis Coult. 



9610 rigidissimus Engelm. 



9611 spinosus Coult. 



9612 polyacanthus Engelm. 



9613 Poselgeii Coult. 



9614 Roetteri Engelm. 



9615 Roemeri Muhlenpf. 



9616 Scrjottii Engelm. 



9617 stramineus Engelm. 



9618 Thurberi Engelm. 



9619 triglochidiattis Engelm. 



Echiiiocereus 



9620 caespitosus Engelm. 



9621 castaneus (Engelm.) Heller 



9622 viridiflorus Engelm. 



9623 tubulosus (Coult.) Heller 



Echiiiocactus 



9624 bi color Schottii Engelm. 



9625 brevihamatus Engelm. 



9626 cylindraceus Engelm. 



9627 Emoryi Engelm. 



9628 erectocentrus Coult. 



9629 hamatocanthus Muhlenpf. 



9630 brevispinus(Engelm.)Coult 



9631 longihamatus (Gal.) Coult. 



