LILY FAMILY (Liliaceae)
Trillium nivale
Flowers--Solitary, pure white, about 1 in. long, on an erect or curved peduncle, from a whorl of 3 leaves at summit of stem. Three spreading, green, narrowly oblong sepals; 3 oval or oblong petals; 6 stamens, the anthers about as long as filaments; 3 slender styles stigmatic along inner side. Stem: 2 to 6 in. high, from a short, tuber-like rootstock. Leaves: 3 in a whorl below the flower, 1 to 2 in. long, broadly oval, rounded at end, on short petioles. Fruit: A 3-lobed reddish berry, about 1/2 in. diameter, the sepals adhering.
Preferred Habitat--Rich, moist woods and thickets.
Flowering Season--March-May.
Distribution--Pennsylvania, westward to Minnesota and Iowa, south to Kentucky.
Only this delicate little flower, as white as the snow it sometimes must push through to reach the sunshine melting the last drifts in the leafless woods, can be said to wake the robins into song; a full chorus of feathered love-makers greets the appearance of the more widely distributed, and therefore better known, species.
By the rule of three all the trilliums, as their name implies, regulate their affairs. Three sepals, three petals, twice three stamens, three styles, a three-celled ovary, the flower growing out from a whorl of three leaves, make the naming of wake-robins a simple matter to the novice.
One of the most chastely beautiful of our native wild flowers--so lovely that many shady nooks in English rock-gardens and ferneries contain imported clumps of the vigorous plant--is the Large-flowered Wake-Robin, or White Wood Lily (T. grandiflorum). Under favorable conditions the waxy, thin, white, or occasionally pink, strongly veined petals may exceed two inches; and in Michigan a monstrous form has been found. The broadly rhombic leaves, tapering to a point, and lacking petioles, are seated in the usual whorl of three, at the summit of the stem, which may attain a foot and a half in height; from the centre the decorative flower arises on a long peduncle.
Certainly the commonest trillium in the East, although it thrives as far westward as Ontario and Missouri, and south to Georgia, is the Nodding Wake-Robin (T. cernuum), whose white or pinkish flower droops from its peduncle until it is all but hidden under the whorl of broadly rhombic, tapering leaves. The wavy margined petals, about as long as the sepals--that is to say, half an inch long or over--curve backward at maturity. One finds the plant in bloom from April to June, according to the climate of its long range.
