2. Utricularia Pumila Walt. Two-Flowered Bladderwort

Fig. 3862

Utricularia pumila Walt. Fl. Car. 64. 1788.

Utricularia biflora Lam. 111. 1: 50. 1791.

U. longirostris LeConte; Ell. Bot. S. C. & Ga. 1: 21.

1816. U. macrorhyncha Barnh. Bull. Torr. Club 25: 515.

1898.

Stems creeping on the bottom in shallow water, radiating from the base of the scape; leaves alternate, dichotomously divided, the segments capillary, bladder-bearing. Scapes solitary or two together, 2'-5' high, 1- 4-flowered, with 1-3 scales or none; pedicels 2 1/2-8" long, erect-ascending; corolla yellow, the upper lip more or less 3-lobed, 4"-5" long, 6"-7" broad, the lower 4"-5" long and broad, the palate prominent, 2-lobed; spur slenderly conic or subulate, obtuse or emarginate, equalling or usually exceeding the lower lip; capsule globose, 1 1/2" in diameter.

In shallow water, Massachusetts to Florida and Louisiana, near the coast. July-Aug.

3. Utricularia Fibrosa Walt. Fibrous Blad-Derwort

Fig. 3863

Utricularia fibrosa Walt. Fl. Car. 64. 1788.

U. striata LeConte; Torr. Cat. Pl. N. Y. 89. 1819.

Stems creeping on the bottom in shallow water, radiating from the base of the scape. Leaves alternate, trichotomous at base, the rays di- or trichotomously divided, the segments capillary, fewer and more or less root-like when bladder-bearing. Scapes solitary or 2 together, 4'-16' high, 2-6-flowered, with 1 or 2 scales or none; pedicels 2 1/2"-6" long, one-half longer in fruit, ascending; calyx-lobes 1"-1 1/2" long, a little longer in fruit; corolla yellow, the upper lip broadly triangular, faintly 3-lobed, 31/2"-5" long, 6"-7" broad, radiately striate, the lower slightly 3-lobed, 3i"-5" long and broad, the palate prominent, 2-lobed; spur conic at base, slender above, obtuse or emarginate, appressed to and equalling or exceeding the lower lip; capsules 2"-2 1/2" in diameter.

In shallow water, Long Island to Florida and Mississippi, near the coast. June-Aug.

4. Utricularia Intermedia Hayne. Flat-Leaved Bladderwort

Fig. 3864

U. intermedia Hayne, in Schrad. Journ. Bot. 18001:

18. 1801.

Stems creeping on the bottom in shallow water, radiating from the base of the scape. Leaves alternate, those on some branches or portions of branches 2V-7" long, trichotomous at base, the rays di- or trichotomously divided, with linear, flat, bristly-serrulate segments, and without bladders, those on other branches or portions of branches shorter and root-like, with fewer capillary segments and a few large bladders up to 2 1/2" long; scapes solitary, 2's' high, 1-4-flowered, with 1 or several auriculate scales; pedicels 4"-10" long, erect-ascending; calyx-lobes 1"-1 1/2" long, a little larger in fruit; corolla yellow, the upper lip broadly triangular, 2 1/2"-3" long, 3 1/2"-4" broad, the lower slightly 3-lobed, 5"-6" long and broad, the palate prominent; spur conic at base, cylindric above, acute, about 3/4 as long as the lower lip; capsules 1 1/2" in diameter.

In shallow water, Newfoundland to British Columbia, south to New Jersey, Indiana and California. Also in Europe. May-Aug. Commonly propagated by the velvety winter-buds.