WILD FLOWERS [130]
the normal quantity of fertile seed is set. Therefore, for the bee's benefit, does each little floret conceal nectar in a tube so deep that small pilferers cannot reach it; but when a honeybee, for example, depresses the keel of the papilionaceous blossom, abundant reward awaits him in consideration of his services in transferring pollen. After the floret which he has been the means of fertilizing closes over its seed-vessel on his departure, it gradually withers, grows brown, and hangs downward, partly to indicate to the next bee that comes along which fords in the head still contain nectar, and which are done for; partly to hide the precious little vigorous green seed-pod in the center of each withered, papery corolla from the visitation of certain insects whose minute grubs destroy countless millions of the progeny of less careful plants. Thus the erect florets in a head stand awaiting their benefactors; those drooping around the outer edge are engaged in the most serious business of life. Sometimes a solitary old maid remains standing, looking anxiously for a lover, at the end of the season. Usually all the florets are then bent down around the stem in a brown and crumpled mass. But however successfully the clover guards its seeds from annihilation, its foliage is the favorite food of very many species of caterpillars and of all grazing cattle the world around. This is still another plant frequently miscalled shamrock. Good luck or bad attends the finding of the leaves, when compounded of an even or an odd number of leaflets more than the normal count, according to the saying of many simple-minded folk.
The little RABBIT'S-FOOT, PUSSY, OLD-FIELD, or STONE CLOVER (T. arvense) has silky plumed calices to hold its minute whitish florets, giving the dense, oblong heads a charming softness and dove color after it has gone to seed. Like most other clovers, it has come to us from the Old World.
FLOWERING SPURGE (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 situated within the white cup-shaped involucre, usually mistaken for a corolla. Staminate flowers scattered over inner surface of involucre, each composed of a single stamen on a thread-like pedicel with a rudimentary calyx or tiny bract below it. A solitary pistillate flower at bottom of involucre, consisting of 3-celled ovary; 3 styles, 2-cleft, at length forming an erect 3-lobed capsule separating into 3 2-valved carpels. Stem: 1 to 3 ft. high, often brightly spotted, simple below, umbellately 5-branched above (usually). Leaves: Linear, lance-shaped or oblong, entire; lower ones alternate, upper ones whorled. Preferred Habitat - Dry soil, gravelly or sandy. Flowering Season - April-October. Distribution - From Kansas and Ontario to the Atlantic.
A very commonplace and uninteresting looking weed is this spurge, which no one but a botanist would suspect of kinship with the brilliant vermilion poinsettia, so commonly grown in American greenhouses. Examination shows that these little bright white cups of the flowering spurge, simulating a five-cleft corolla, are no more the true flowers in the one case than the large red bracts around the poinsettia's globular greenish blossom involucres are in the other. From the milky juice alone one might guess the spurge to be related to the rubber plant. Still another familiar cousin is the stately castor-oil plant; and while the common dull purplish IPECAC SPURGE (E. Ipecacuanhae) also suggests unpleasant doses, it is really a member of quite another family that furnishes the old-fashioned emetic. The flowering spurge, having its staminate and pistillate flowers distinct, depends upon flies, its truest benefactors, to transfer pollen from the former to the latter.
STAGHORN SUMAC; VINEGAR TREE (Rhus hirta; R. typhina of Gray) Sumac family
Flowers - Greenish or yellowish white, very small, usually 5-parted, and borne in dense upright, terminal, pyramidal clusters. Stem: A shrub or
The little RABBIT'S-FOOT, PUSSY, OLD-FIELD, or STONE CLOVER (T. arvense) has silky plumed calices to hold its minute whitish florets, giving the dense, oblong heads a charming softness and dove color after it has gone to seed. Like most other clovers, it has come to us from the Old World.
FLOWERING SPURGE (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 situated within the white cup-shaped involucre, usually mistaken for a corolla. Staminate flowers scattered over inner surface of involucre, each composed of a single stamen on a thread-like pedicel with a rudimentary calyx or tiny bract below it. A solitary pistillate flower at bottom of involucre, consisting of 3-celled ovary; 3 styles, 2-cleft, at length forming an erect 3-lobed capsule separating into 3 2-valved carpels. Stem: 1 to 3 ft. high, often brightly spotted, simple below, umbellately 5-branched above (usually). Leaves: Linear, lance-shaped or oblong, entire; lower ones alternate, upper ones whorled. Preferred Habitat - Dry soil, gravelly or sandy. Flowering Season - April-October. Distribution - From Kansas and Ontario to the Atlantic.
A very commonplace and uninteresting looking weed is this spurge, which no one but a botanist would suspect of kinship with the brilliant vermilion poinsettia, so commonly grown in American greenhouses. Examination shows that these little bright white cups of the flowering spurge, simulating a five-cleft corolla, are no more the true flowers in the one case than the large red bracts around the poinsettia's globular greenish blossom involucres are in the other. From the milky juice alone one might guess the spurge to be related to the rubber plant. Still another familiar cousin is the stately castor-oil plant; and while the common dull purplish IPECAC SPURGE (E. Ipecacuanhae) also suggests unpleasant doses, it is really a member of quite another family that furnishes the old-fashioned emetic. The flowering spurge, having its staminate and pistillate flowers distinct, depends upon flies, its truest benefactors, to transfer pollen from the former to the latter.
STAGHORN SUMAC; VINEGAR TREE (Rhus hirta; R. typhina of Gray) Sumac family
Flowers - Greenish or yellowish white, very small, usually 5-parted, and borne in dense upright, terminal, pyramidal clusters. Stem: A shrub or