"I have, also, lately been re-observing daily Lobelia fulgens--this in my garden is never visited by insects, and never sets seeds, without pollen be put on the stigma (whereas the small blue Lobelia is visited by bees and does set seed); I mention this because there are such beautiful contrivances to prevent the stigma ever getting its own pollen; which seems only explicable on the doctrine of the advantage of crosses."英文原著 · 《The Life and Letters-2》
Flowers - Deep, bright blue, rarely white, several or many, about 2 in. high, stiffly erect, and solitary at ends of very long foot-stalk. Calyx of 4 unequal, acutely pointed lobes. Corolla funnel form, its four lobes spreading, rounded, fringed around ends, but scarcely on sides. Four stamens inserted on corolla tube; 1 pistil with 2 stigmas. Stem: 1 to 3 ft. high, usually branched, leafy. Leaves: Opposite, upper ones acute at tip, broadening to heart-shaped base, seated on stem.英文原著 · 《WILD FLOWERS》
Flowers - Very small, purplish blue, in numerous slender, erect, compact spikes. Calyx 5-toothed; corolla tubular, unequally 5-lobed; 2 pairs of stamens; 1 pistil. Stem: 3 to 7 ft. high, rough, branched above, leafy, 4-sided. Leaves: Opposite, stemmed, lance-shaped, saw-edged, rough; lower ones lobed at base. Preferred Habitat - Moist meadows, roadsides, waste places. Flowering Season - June-September. Distribution - United States and Canada in almost every part.英文原著 · 《WILD FLOWERS》
In general habit like the two preceding plants, the FALSE PENNYROYAL (Isanthus brachiatus) nevertheless prefers that its sandy home should be near streams. From Quebec to Georgia, westward to Minnesota and Texas, it blooms in midsummer, lifting its small, tubular, pale blue flowers from the axils of pointed, opposite leaves. An unusual characteristic in one of the mint tribe is that the five sharp lobes of its bell-shaped calyx, and the five rounded, spreading lobes of the corolla, are of equal length, hence its Greek name signifying an equal flower.英文原著 · 《WILD FLOWERS》
Flowers - Pale blue, very small, crowded on spike-like racemes from axils of leaves, often from alternate axils. Calyx 4-parted; corolla of 4 lobes, lower lobe commonly narrowest ; 2 divergent stamens inserted at base and on either side of upper corolla lobe ; a knob-like stigma on solitary pistil. Stem: From 3 to 10 in. long, hairy, often prostrate, and rooting at joints. Leaves: Opposite, oblong, obtuse, saw-edged, narrowed at base. Fruit: Compressed heart-shaped capsule, containing numerous flat seeds. Preferred Habitat - Dry fields, uplands, open woods. Flowering Season - May-August.英文原著 · 《WILD FLOWERS》
GREAT LOBELIA; BLUE CARDINAL-FLOWER (Lobelia syphilitica) Bellflower family英文原著 · 《WILD FLOWERS》
It's just a lobe, right? It's not the whole thing.美剧 · 《Shameless》