(Apocynum cannabinum) Dogbane family Flowers - Greenish white, about 1/4 in. across, on short pedicels, in dense clusters at ends of branches and from the axils. Calyx of 5 segment...
Class and Order. Syngenesia Polygamia Superflua. Generic Character. Recept. nudum, conicum. Pappus nullus. Cal. hemisphæricus: squamis æqualibus. Sem. subovata. Specific Character...
(Linaria Linaria; L. vulgaris of Gray) Figwort family Flowers - Light canary yellow and orange, 1 in. long or over, irregular, borne in terminal, leafy-bracted spikes. Corolla spur...
(Ilex opaca) Holly family Flowers - Very small, greenish or yellowish white, from 3 to 10 staminate ones in a short cyme; fertile flowers usually solitary, scattered. Stem: A small...
(Physostegia Virginiana) Mint family Flowers - Pale magenta, purplish rose, or flesh-colored, often variegated with white, 1 in. long or over, in dense spikes from 4 to 8 in. long....
(Ilex verticillata) Holly family Flowers - Small, greenish white, the staminate clusters 2 to 10 flowered the fertile ones 1 to 3 flowered. Stem: A shrub 6 to 25 ft. high. Leaves:...
(Cichorium Intybus) Chicory family Flower-head - Bright, deep azure to gray blue, rarely pinkish or white, 1 to 1 1/2 in. broad, set close to stem, often in small clusters for near...
(Verbascum Blattaria) Figwort family Flowers - Yellow, or frequently white, 5-parted, about 1 in. broad, marked with brown; borne on spreading pedicles in a long, loose raceme; all...
(Vernonia Noveboracensis) Thistle family. Flower-head - Composite of tubular florets only, intense reddish-purple thistle-like heads, borne on short, branched peduncles and forming...
(Hepalica Hepatica; H. triloba of Gray) Crowfoot family Flowers - Blue, lavender, purple, pinkish, or white; occasionally, not always, fragrant; 6 to 12 petal-like, colored sepals...
(Eupatorium perfoliatum) Thistle family Flower-heads - Composite, the numerous, small, dull, white heads of tubular florets only, crowded in a scaly involucre and borne in spreadin...
(Iris versicolor) Iris family Flowers - Several, 2 to 3 in. long, violet-blue variegated with yellow, green, or white, and purple veined. Six divisions of the perianth: 3 outer one...
(Achillea Millefolium) Thistle family Flower-heads - Grayish-white, rarely pinkish, in a hard, close, flat-topped, compound cluster. Ray florets 4 to 6, pistillate, fertile; disk f...
Class and Order. Decandria Monogynia. Generic Character. Cal. 5-phyllus. Petala 5, cordata. Caps. 5-locularis, 10-valvisi, loculis 1-spermis. Specific Character and Synonyms. FAGON...
Class and Order. Pentandria Monogynia. Generic Character. Contorta. Folliculi 2 erecti. Semina nuda. Specific Character and Synonyms. VINCA rosea caule fructescente erecto, foliis...
(Opulaster opulifolius; Spiraea opulifolia of Gray) Rose family Flowers - White or pink, small, in numerous rounded terminal clusters to 2 in. broad. Calyx 5-lobed; 5 rounded petal...
"If blue is the favorite color of bees, and if bees have so much to do with the origin of flowers, how is it that there are so few blue ones? I believe the explanation to be that a...
(Minulus ringens) Figwort family Flowers - Purple, violet, or lilac, rarely whitish; about 1 in. long, solitary, borne on slender footstems from axils of upper leaves. Calyx prisma...
(Pyrola uliginosa; P. rotundifolia, var. uliginosa of Gray) Wintergreen family Flowers - Magenta pink, fragrant, about 1/2 in. across, 7 to 15 on a leafless scape 6 to 15 in. high....
(Capnoides aureum; Corydalis aurea of Gray) Poppy family Flowers - Bright yellow, about 1/2 in. long, with a spur half the length of the tubular corolla; irregular, lipped; each up...
(Lobelia syphilitica) Bellflower family Flowers - Bright blue, touched with white, fading to pale blue, about 1 in. long, borne on tall, erect, leafy spike. Calyx 5-parted, the lob...
(Veratrum viride) Bunch-flower family Flowers - Dingy, pale yellowish or whitish green, growing greener with age, 1 in. or less across, very numerous, in stiff-branching, spike-lik...
(Asarum Canadense) Birthwort family Flower - Solitary, dull purplish brown, creamy white within, about 1 in. broad when expanded, borne on a short peduncle close to or upon the gro...
(Kalmia latifolia) Heath family Flowers - Buds and new flowers bright rose pink, afterward fading white, and only lined with pink, 1 in. across, or less, numerous, in terminal clus...
(Diervilla Diervilla; D. trifida of Gray) Honeysuckle family Flowers - Yellow, small, fragrant, 1 to 5 (usually 3) together on a peduncle from upper leaf-axils. Calyx tube slender,...
(Euphorbia corollata) Spurge family Flowers - (Apparently) white, small, borne in forked, long-stalked umbels, subtended by green bracts; but the true flowers are minute, and situa...
(Tanacetum vulgare) Thistle family Flower-heads - Small, round, of tubular florets only, packed within a depressed involucre, and borne, in flat-topped corymbs. Stem: 1 1/2 to 3 ft...
(Smilax herbacea) Smilax family Flowers - Carrion-scented, yellowish-green, 15 to 80 small, 6-parted ones clustered in an umbel on a long peduncle. Stem: Smooth, unarmed, climbing...
(Rosa) Rose family Just as many members of the lily tribe show a preference for the rule of three in the arrangements of their floral parts, so the wild roses cling to the quinary...
(Pyxidanthera barbulata) Diapensia family Flowers - Abundant, white, or sometimes pink, about 1/4 in. across, 5-parted, solitary, seated at tips of branches. Stem: Prostrate, creep...