INDEX 



Closing of flowers, 871, 872, 873. 



Clover, root tubercles, 788. 



Coat, seed, 905, 907, 909, 975, 932. 



Cobaea, tendrils, 652. 



Cocain, 626. 



Cocklebur, fruit, 924; fruit section, 932. 



Codiaeum, pollen, 831. 



Coenocyte, 520, 697, 750. 



Coleus, epidermis, 577; flowers, 829, 846. 



Collateral bundles, 683. 



Collenchyma, 697, 699, 



Colony, rhizome, 671. 



Color, 527, 528, 708, 845, 847, 898, 925. 



Columella, 811. 



Columnar strength, 704. 



Commensal; commensalism, 752, 753. 



Companion cells, 681, 682. 



Compass plants, 547. 



Competition, 487. 



Complementary tissue, 66 1. 



Compositae, flowers, 856, 862. 



Compound bundles, 682 ; leaves, 544, 546, 

 550, 605, 652, 676, 783. 



Compression strength, 704. 



Concentric bundles, 683. 



Conduction of carbohydrates, 694. 



Conductive bundles, 530, 531, 533, 534, 536, 

 581, 617, 621, 680, 682, 683, 684, 686, 

 687, 688, 695, 701, 702, 703; elements, 

 679, 680, 681; parenchyma, 682; tissue, 

 5i3, 55i, ^30, 638, 639, 678, 679, 680, 

 681, 682, 683, 684, 685, 686, 687, 688, 

 689, 690, 692, 693, 769. 



Conduplicate vernation, 937. 



Cone, fruit, 938; tree, 648. 



Congenital structures, 951. 



Conidia, 811. 



Conifers, 648. 



Connective, 840. 



Contact pollination, 862. 



Contraction, root, 504, 505. 



Convoluta, 803. 



Convolute vernation, 937. 



Cord grass, rhizomes, 669. 



Cork, 661, 705, 7a6, 707; cambium, 661, 

 705; cortex, 705; wound, 707. 



Corm, 675, 676. 



Cornus, stem, 730. 



Corolla, 731, 825, 826, 828, 829, 835, 840, 

 841, 846, 854, 857, 859, 875. 



Corona, 902. 



Correlation, 486, 509, 747. 



Cortex, 769, 782; cork, 705. 



Corylus, flowers, 834. 



Corymb, 828, 846. 



Cosmopolitan plants, 927. 



Cottonwood, absciss layer, 583; twigs, 

 736. 



Cotyledon (plant), leaf section, 629. 



Cotyledon (seed leaf), 491, 601, 905, 906, 



935, 936. 



Crab apple, spines, 739. 

 Crataegus, 655; root propagation, 505; 



spines, 739. 

 Creation, special, 947. 

 Creeping stems, 507, 672, 673. 

 Creosote bush, roots, 506. 

 Cross pollination, 829, 836, 852, 854, 859, 



866, 867. 



Croton, pollen, 831. 

 Crown, 902. 

 Crustose lichens, 615. 

 Crumpled vernation, 937. 

 Crystal aggregates, 625; sand, 625. 

 Crystals, 625, 723; protein, 912, 915. 

 Cucumber, tendrils, 652. 

 Cup, acorn, 925. 

 Cuphea, pollen, 37. 

 Cupule, 808. 

 Currant, leaf veins, 639. 

 Cuscuta, habit, 768 ; haustoria, 769. 

 Cushion plants, 677, 738. 

 Cuticle, 532, 535, 558, 567, 568, 569, 570, 



623, 639, 642, 697. 



Cuticular layer, 568; transpiration, 564. 

 Cutin; cutinization, 557, 568, 569. 

 Cuttings, propagation by, 637. 

 Cyanic colors, 845. 

 Cyclanthera, tendril sections, 699. 

 Cycloloma, 922. 

 Cyme, 825, 828, 829. 

 Cynara, bud, 642. 

 Cynipid galls, 782. 



Cypress knees, 507, 508, 509 ; swamp, 508. 

 Cystolith, 626. 



Dandelion, flower, 857; inflorescence move- 

 ments, 872 ; roots and stems, 677 ; varia- 

 tion, 599. 



Date, seedling, 935. 



Dead tissues, advantage, 693. 



Death, 587, 910. 



Deciduous herbs, 712, 713; trees, 583, 584, 

 649, 710. 



Decussate phyllotaxy, 542, 543, 549, 641, 

 647. 



Dehiscence, anthers, 829, 830; fruits, 919, 

 920. 



Delayed germination, 932. 



Deliquescent trees, 584, 649, 650. 



Dependent plants, 752. 



Desert plants, 505, 635, 944 (see also 

 Xerophytes) . 



Desiccation, 587, 700. 



Determinate inflorescence, 825, 828. 



Determinative factors, 951. 



Dextrorse twiners, 652. 



Dextrose, 914. 



