66o 



INDEX 



Crab-apple, western, 379, 381 

 Cranberry, 548 



American, 548 



European, 544 



large, 548 



mountain, 550 



small, 548, 549 



types of, 549 

 Crataegus, 366, 367 

 Creeping snowberry, 543 



wintergreen, 543 

 Crimson clover, 433, 435 

 Cross pollination, 52 



artificial, 95 

 Crown vetch, 429 

 Cruciferae, 323 



key to principal genera of, 326 

 Cucumber, 6x5, 617, 620 



common field, 620, 621 



English forcing, 621 



Jerusalem, 617 



musk, 620 



prickly, 617 



Sikkim, 621 



squirting, 606 



snake, 620 



star, 606, 620 



wild, 606 

 Cucumis, 610 



anguria, 617, 620, 622 



dipsaceus, 613 



key to principal species of, 617 



melo, 617, 618 

 var. acidulus, 620 

 cantalupensis, 618 

 chito, 620 

 dudaim, 620 

 flexuosus, 618, 620 

 inodorus, 619 

 reticulatus, 618 

 saccharinus, 618 



moschata, 620 



sativus, 617, 620 



Cucumis, sativus, anglicus, 621 



Sikkimcnsis, 62 1 

 •Cucurbit, 606 

 Cucurbita, 610, 612 



key to important species of, 612 



maxima, 612, 613 



moschata, 612, 613 



pepo, 612, 613 



ovipera, 613 



Cucurbitaceae, 606 



key to principal genera of, 610 

 Culms, 72 



Currant tomato, 587 

 Currants, American black, 319, 320 

 flowering, 319, 320 



Buffalo, 319 



European black, 319, 320 



golden, 319 



Missouri, 319 



red, 320 



white, 320 

 Cushaw, 612, 615 

 Cuticle, 44 

 Cutting lettuce, 633 

 Cyanophyceae, 63 

 Cydanthera, 608 

 Cydonia, 388 



oblonga, 388 

 varieties of, 388 

 Cymopteris, 532 

 Cynara scolymus, 639 

 Cyperaceae, 85 

 Cyphomandra betacea, 592 

 Cypress vine, SS4 

 Cytase, 142 

 Cytoplasm, 6 



Dahlia, 625 



Dakota vetch, 429 



Damson, 400 



Dandelion, 628 



Dangleberry, $47 



Danish ball head cabbages, 332 



