There are many kinds of Alsine, widely distributed, low herbs, liking moist ground and shady places, with small, starry white flowers; with four or five sepals; four or five petals, deeply two-lobed or none; three to ten stamens and three to five styles; capsule roundish or oblong, rather shorter than that of Cerastium, splitting to below the middle, with twice as many valves as there are styles and many seeds. Many of these plants are weeds. They are often called Stitchwort. The Greek name means "grove," the home of some kinds.
Tall Chickweed
Alsìne lóngipes.
(Stellaria)
White
Summer
Northwest, Nev., Utah, etc.
An attractive little plant, with smooth stems, from six to fifteen inches tall, and pretty little flowers, less than half an inch across, growing singly, or in loose clusters, with white petals which are deeply two-lobed, so that they appear to be ten. The capsule is almost black when ripe. This is common in moist and grassy places in Yosemite and when growing in the shade is taller and more slender than in the open. It reaches an altitude of ten thousand feet and is found in the East and in Asia.
There are many kinds of Cerastium, abundant in the temperate zone, resembling Alsine, but usually downy and therefore called Mouse-ear Chickweeds. The flowers are white, usually with five sepals, five petals notched at the tips or with two lobes, ten or five stamens and five stigmas. The cylindrical capsule, often curved, splits at the top into ten teeth.
Field Chickweed
Cerástium arvénse
White
Spring, summer
U. S.
On the ledges moistened by the mist and spray that blow from the Yosemite waterfalls, among the glistening, wet grasses, these pretty little white flowers are quite conspicuous. They smell pleasantly of honey, measure about half an inch across, and have more or less downy stems, from five to ten inches tall. This is the prettiest Cerastium, though not so "mousy" as some, and grows in dry as well as moist situations.
Field Chickweed—Cerastium arvense.
Tall Chickweed—Alsine longipes.