178 
The Ohio Naturalist. 
[Vol. XIII, No. 8, 
Moehringia L. 
Low perennial herbs. Leaves oblong, ovate-lanceolate or 
linear, sessile or with short petioles; flowers white, solitary or in 
cymes; sepals and petals 4 or 5, stamens 8 or 10. 
1 . Moehringia lateriflora (L.) Fenzl. Blunt-leaf Moehrin¬ 
gia. Stems finely pubescent, 6 to 14 inches high; leaves thin, 
oval or oblong, obtuse, the margins and nerves ciliate; flowers 
arranged in cymes or solitary; petals twice as long as the sepals. 
Ottawa, Auglaize, Darke. Morrow, Franklin, Perry. 
Holosteum. 
Annual or biennial, erect herbs with acute, ovate-lanceolate 
leaves. Flowers white, arranged in long terminal peduncles in 
umbellate cymes; petals 5, sepals 5, stamens 3 to 5, rarely 10. 
1. Holosteum umbellatum L. Jagged Chickweed. Gla¬ 
brous or somewhat glandular, 3 to 7 inches high, pubescent above 
and a little hairy below. Basal leaves spreading, oblanceolate or 
oblong; stem leaves oblong, sessile; flowers arranged 3 to 8 in an 
umbel; pedicels erect in flower, reflexed in fruit; sepals obtuse, 
shorter than the petals. Hamilton County. 
Alsine L. 
Tufted herbs with white flowers arranged in cymes. Sepals 
5 rarely 4; petals of the same number, 2 cleft, 2 parted, or emar- 
ginate, rarely none; stamens 10 or fewer; styles usually 3, rarely 
4 or 5, generally opposite the sepals. 
1. Styles 5; leaves ovate, pointed. A. aquatica. 
1. Styles 3, rarely 4. 2. 
2. Leaves linear or lanceolate, not pubescent. 3. 
2. Leaves ovate-pubescent. 4. 
3. Leaves acute at each end; seeds smooth. A. longifolia. 
3. Leaves broadest near the base; seeds rough. A. graminea. 
4. Petals shorter than the calyx; lower leaves petioled. A. media. 
4. Petals longer than the calyx; lower leaves rarely petioled. A. pubera. 
1. Alsine aquatica (L.) Britt. Water Chickweed. Perennial, 
usually glandular-pubescent above, ascending or decumbent, 
about 13 inches high. Leaves ovate or ovate-lanceolate, acute; 
the upper ones sessile, the lower petioled, rounded at the base, 
to \ l /2 inches long; flowers solitary, in the forks of the stem, or 
in cymes; pedicels longer than the calyx in fruit, deflexed; calyx 
campanulate, sepals about half as long as the 2-cleft petals; 
stamens 10. Guernsey County. 
2. Alsine media L. Common Chickweed. Annual; tufted 
and much branched, decumbent or ascending; 4 to 14 inches 
high; glabrous, except the line of hairs along the stem and branches, 
the pubescent sepals and ciliate petioles; leaves oval or ovate, 
usually acute; flowers in terminal, leafy cymes or solitary in the 
axils. General. 
