The flowers leave 3 rounding petals, concave, and of an exceptionally pure white color. They are of two kinds, sometimes borne on separate stems, sometimes upon the same stem (in which case the stamen-bearing flowers are placed upon its upper part); the stamens are many, and of a pure orange yellow, making a heart of gold in their white blossoms, while the pistil appears in its flower as a beautiful light green ball. The calyx is green and 3-parted. The flowers are arranged in whorls of threes and fours, upon inch long foot-stems, which are placed along a large many-angled, green stem, rising from the root. The Arrowhead is attractive in all its parts, and in its gesture; it is truly decorative, and suggests the subjects treated by the best Gothic artists. [Illustration: ARROWHEAD: Sagittaria variabilis.] [Illustration: Pods of Asclepias Cornuti.] INDEX. SCIENTIFIC NAMES. A PAGE Achillea Millefolium, 306 Acorus calamus, 608 Actæa spicata, 18 Agrimonia Eupatoria, 168 ALISMACEÆ, 610 AMARYLLIDACEÆ, 568 Ampelopsis quinquefolia, 110 Amphicarpæa monoica, 124 Anagallis arvensis, 416 Anaphalis margaritacea, 302 Andromeda, ligustrina, 376 polifolia, 374 Anemone, nemorosa, 6 Virginiana, 8 Anemonella thalictroides, 14 Antennaria plantaginifolia, 246 Anthemis Cotula, 258 Apios tuberosa, 142 APOCYNACEÆ, 418 Apocynum, androsæmifolium, 418 cannabinum, 420 Aquilegia Canadensis, 20 ARACEÆ, 600 Aralia, nudicaulis, 220 racemosa, 222 ARALIACEÆ, 220 Arctium, Lappa, 298 Arisæma Dracontium, 604 triphyllum, 606 ARISTOLOCHIACEÆ, 528 Artemisia Absinthium, 274 Asarum Canadense, 528 ASCLEPIADACEÆ, 422 Asclepias, Cornuti, 434 incarnata, 426 obtusifolia, 424 phytolaccoides, 430 purpurascens, 428 quadrifolia, 422 tuberosa, 432 Aster, acuminatus, 344 cordifolius, 354 corymbosus, 336 linariifolius, 348 macrophyllus, 346 multiflorus, 340 Novæ Angliæ, 338 patens, 352 ptarmicoides, 334 puniceus, 342 undulatus, 350 B Baptisia tinctoria, 120 Barbarea vulgaris, 52 BERBERIDACEÆ, 32 Berberis vulgaris, 32 Bidens, cernua, 312 frondosa, 314 BORRAGINACEÆ, 440 Brassica, nigra, 56 Sinapistrum, 54 Brunella vulgaris, 502 Buda rubra, 82 C Calopogon pulchellus, 546 Caltha palustris, 4 Campanula, rapunculoides, 368 rotundifolia, 366 CAMPANULACEÆ, 364 CAPRIFOLIACEÆ, 226 CARYOPHYLLACEÆ, 76 Cassandra calyculata, 372 Cassia Marilandica, 122 Castilleia coccinea, 456 Ceanothus Americanus, 108 CELASTRACEÆ, 106 Celastrus scandens, 106 Cephalanthus occidentalis, 242 Cerastium arvense, 76 Chelidonium majus, 44 Chelone glabra, 482 Chimaphila, maculata, 400 umbellata, 398 Chrysanthemum Leucanthemum, 262 Cichorium Intybus, 296 Circæa alpina, 202 CISTACEÆ, 60 Clematis, verticillaris, 28 Virginiana, 30