624 ONAGRACEiE. Ludw igia. 



win! Florida, Dr. Chajman! — Stem 6-18 inches high, branching from the 

 base, purplisli. Flowers rather larger than in L. linearis, which it much re- 

 sembles. Capsule 3-4 lines in length, of the same diameter throughout. — 

 In the fruit this species resembles L. cylindrica, but the flowers are very 

 diiferent and much larger. 



6. L. cylindrica (Ell.): glabrous; stem erect, slightly angled, much 

 branched ; leaves lanceolate, acute at both ends; flowers (very small) axil- 

 lary, solitary or somewhat clustered, apetalous, sessile, minutely bibracteo- 

 late; lobes of the calyx very short ; capsules cylindrical, slightly 4-grooved, 

 abrupt at each end, rather slender. — JEll. sh. 1. p- 21.3. L. heterophylla, 

 Pair.! swpj^l. 3. 'p. 512. Isnardia cylindrica, DC! jjrw/r. 3. p. 61. 

 Jussisea Ijrachycarpa, Lam. fide DC. 



0. hrachycarpa : fruit shorter (the length about twice the diameter.) 

 S. Carolina! to Florida! and Louisiana! ^3. Florida, Dr. Chapman! 

 Texas, Drummond ! July-Sept. — Stem about 3 feet high. Leaves often ob- 

 scurely denticulate, with distinct intramarginal veins. Lobes of the calyx 

 much shorter than the ovary. Capsules 3-4 (in /?. about 2) lines long. 

 Seeds oblong, slightly curved, shining. 



7. L. pilosa (Walt.) : clothed wdth a soft pubescence ; stem erect, much 

 branched, often stoloniferous at the base ; leaves lanceolate or oblong-lanceo- 

 late, mostly acute at both ends ; flowers sessile, axillary and crowded at the 

 extremity of the branches ; bracteoles lanceolate-subulate, coherent vvdth the 

 base of the ovary ; petals minute or none ; lobes of the calyx triangular- 

 ovate, acuminate, nearly the length of the villous-pubescent subglobose 

 rather 4-sided capsule. — Walt.! Car. p. 89, not oi Ell. ^r. L. hirsuta, 

 Lam. diet. 3. p. 587 (ex sp. in hcrh. Desf.), not of Pursh, ^r. L. mollis, 

 Michx.! fl. 1. p. 90 ; Ell! sk. 1. j^- 214! Isnardia mollis, DC! prodr. 3. 

 p. 60. I. hirsuta, DC. ! I. c, excl. syn. Ell. 



In swamps, S. Carolina ! to Florida! and Louisiana ! July-Sept. — Stem 

 2-3 feet high, almost villous. Leaves of the branchlets short and small; 

 those of the stems 2-3 inches long ; those of the stolons spatulate. Capsules 

 a little longer than broad, 2-3 lines in diameter, with a broad and flat 

 slightly 4-lobcd stylopodium. Seeds oblong-oval, smooth and shining. 



' '8. L. alata (Ell.) : glabrous, stem erect, more or less winged by the de- 

 current base of the lanceolate leaves; flowers axillary, solitary, sessile, 

 apetalous; bracteoles lanceolate, coherent with the base of the ovar}^ lobes 

 of the calyx nearly the length of the capsule, broadl}^ triangular-ovate ; 

 capsules cubical -obconic, the angles slightly winged. — Ell. sk. 1. p. 212. 

 L. lanceolata. Ell. I. c. Isnardia alata, DC. I. c. I. microcarpa. Hook. Sf 

 Am.! in compan. hot. mag. 1. p. 26. 



In swamps, S. Carolina! and Georgia! to Florida! and Louisiana! 

 July-Sept. — Stem 1-3 feet high, sparingly branched. Leaves obscurely 

 and remotely denticulate. Stigma elongated. Capsules small. Seeds 

 oval. — We have specimens from the late Mr. L. Le Conte, similar, we 

 presume, to those on which the L. lanceolata. Ell. was founded. 



9. L. sph/erocarpa (Ell.) : minutely puberulent or nearly glabrous ; stem 

 erect, slightly angled; leaves lanceolate, acute, attenuate at the base; flow- 

 ers axillary, mostly solitary, subsessile, commonly apetalous ; bracteoles 

 minute or wanting ; lobes of the calyx as long as the capsule, triangular- 

 ovate ; capsules subglobose, 'small. — Ell. sk. i.p. 214, Isnardia sphasrocar- 

 pa, DC. ! inodr. 2. p. 61. 



In very wet places, near Boston, Mr. Greene ! New Jersey ! to Florida ! 

 and Louisiana ! July-Sept. — Stem 2-3 feet high, at length much branched ; 

 the lower portion, when growing in water, subject to a peculiar disease of 



