Part 131 (1/2)

2. A. fasciculatum, Gray. _Scaly stem erect and rising 3--4' out of the ground_, mostly longer than the crowded peduncles; _divisions of the calyx triangular, very much shorter than the corolla_, which has rounded short lobes.--Sandy ground, L. Michigan to Minn., southward west of the Mississippi, and westward. On Artemisia, Eriogonum, etc. May.

[*][*] _Caulescent, flowers densely spicate, with 1--2 bractlets at base of calyx; corolla 2-lipped, the upper lip less or not at all 2-cleft._

3. A. Ludovicianum, Gray. Glandular-p.u.b.escent, branched (3--12' high); corolla somewhat curved, twice the length of the narrow lanceolate calyx-lobes; the lips equal in length. (Phelipaea Ludoviciana, _Walp._)--Minn. to Ill. and Tex., and westward.

4. OROBaNCHE, Tourn. BROOM-RAPE.

Flowers spicate, sessile. Calyx cleft before and behind almost or quite to the base, the divisions usually 2-cleft. Corolla 2-lipped; upper lip erect, 2-lobed or emarginate, the lower spreading, broadly 3-lobed.

Stamens included.--Old World parasites, on roots of various plants.

O. MNOR, L. A span to a foot high, p.u.b.escent, pale yellowish-brown, or with purplish-tinged flowers in a rather loose spike; corolla 6”

long.--Parasitic on clover, N. J. to Va. Sparingly and probably recently introduced.

(Addendum) O. RAMSA, L. Often branched, 6' high or less, of a pale straw-color; flowers 3-bracteate, the lateral bracts small; calyx 4-toothed, split at the back; corolla pale blue, 6--8” long.--On the roots of hemp and tobacco; Ky. (Int. from Eu.)

ORDER 77. LENTIBULARIaCEae. (BLADDERWORT FAMILY.)

_Small herbs (growing in water or wet places), with a 2-lipped calyx, and a 2-lipped personate corolla, 2 stamens with (confluently) one-celled anthers, and a one-celled ovary with a free central placenta, bearing several anatropous seeds, with a thick straight embryo, and no alb.u.men._--Corolla deeply 2-lipped, the lower lip larger, 3-lobed and with a prominent palate, spurred at the base in front; the palate usually bearded. Ovary free; style very short or none; stigma 1--2-lipped. Capsule often bursting irregularly. Scapes 1--few-flowered.--The following are the two princ.i.p.al genera.

1. Utricularia. Calyx-lobes mostly entire. Upper lip of corolla erect.

Filaments strongly incurved. Foliage dissected; bladder-bearing.

2. Pinguicula. Calyx with upper lip deeply 3- and lower 2-cleft.

Corolla-lobes spreading. Filaments straighter. Terrestrial, with entire rosulate leaves next the ground.

1. UTRICULaRIA, L. BLADDERWORT.

Lips of the 2-parted calyx entire, or nearly so. Corolla personate, the palate on the lower lip projecting, often closing the throat; upper lip erect. Anthers convergent.--Aquatic and immersed, with capillary dissected leaves bearing little bladders, which float the plant at the time of flowering; or rooting in the mud, and sometimes with few or no leaves or bladders. Scapes 1--few-flowered; usually flowering all summer. Bladders furnished with a valvular lid and usually with a few bristles at the orifice. (Name from _utriculus_, a little bladder.)

[*] _Upper leaves in a whorl on the otherwise naked scape, floating by means of large bladders formed of the inflated petioles; the lower leaves dissected and capillary, bearing small bladders; rootlets few or none._

1. U. inflata, Walt. Swimming free; bladder-like petioles oblong, pointed at the ends and branched near the apex, bearing fine thread-like divisions; flowers 3--10 (large, yellow); the appressed spur half the length of the corolla; style distinct.--In still water, Maine to Tex., near the coast.

[*][*] _Scapes naked (except some small scaly bracts), from immersed branching stems, which commonly swim free, bearing capillary dissected leaves with small bladders on their lobes; roots few and not affixed, or none. (Mostly perennial, propagated from year to year by tuber-like buds.)_

[+] _Cleistogamous flowers along the submersed copiously bladder-bearing stems._

2. U. clandestna, Nutt. Leaves numerous on the slender immersed stems, several times forked, capillary; scapes slender (3--5' high); lips of the yellow corolla nearly equal in length, the lower broader and 3-lobed, somewhat longer than the approximate thick and blunt spur.--Ponds, from N. Brunswick and N. Eng. to N. J., near the coast.

[+][+] _No cleistogamous flowers._

[++] _Pedicels recurved in fruit; corolla yellow._

3. U. vulgaris, L. (GREATER BLADDERWORT.) Immersed stems (1--3 long) _crowded with 2--3-pinnately many-parted capillary leaves, bearing many bladders_; scapes 5--12-flowered (6--12' long); _corolla closed_ (6--9”

broad), the sides reflexed; spur conical, rather shorter than the lower lip, thick and blunt in the European and the high northern plant; in the common American plant less thick and rather acute.--Common in ponds and slow streams, Newf. to Minn., south to Va. and Tex., and westward. (Eu., Asia.)

4. U. mnor, L. (SMALLER B.) _Leaves scattered_ on the thread-like immersed stems, 2--4 times _forked_, short; scapes weak, 2--8-flowered (3--7' high); _upper lip of the gaping corolla not longer than the depressed palate; spur very short and blunt, or almost none_.--Shallow water, E. Ma.s.s, to Minn., south to N. J. and Ark., and westward. (Eu.)