698 



ONAGRARIiE. XIII. ISNARDIA. XIV. LOPEZIA. 



tary, sessile, apetalous. W. 

 H. Native of Europe, Siberia, 

 and Persia, in marshes and slow 

 running water ; in England, 

 in a pool at Buxstead, Sussex. 

 Schkuhr, handb. 1. t. 25. Hook, 

 in engl. hot. suppl. t. 2593. 

 Dantia palustris, Pet. Th. I.e. 

 (f. 99.) 



far, ft, Americana (D. C. 1. c.) 

 leaves more acuminated at both 

 ends. Q.W. H. Native of North 

 America, in marshes and water, 

 from Canada to Georgia ; and of 

 Mexico. Ludwigia apetala, 

 Walt. car. 89. Ludwigia nitida, 

 Michx. L. palustris, Torrey. 



Marsh Isnardia. Fl. July. 



FIG. 99. 



Britain. PI. creeping. 



* Leaves alternate. 



10 I. ALA V TA (D. C. prod. 3. p. 61.) sterns diffuse, branched, 

 glabrous, distinctly angular and winged ; leaves lanceolate- 

 cuneated, decurrent, glabrous ; flowers sessile, axillary, apeta- 

 lous ; capsule cubical, a little winged. "If.. B. H. Native of 

 North America, in Sullivan Island. Ludwigia alata, Ell. 

 sketch. 1. p. 212. 



Winged-stemmed Isnardia. PI. diffuse. 



111. MICROCA'RPA (Poir. suppl. 3. p. 188.) stems procumbent, 

 ;\ little winged, quite smooth ; leaves alternate, obovate-spatu- 

 late, obscurely glandular-toothed on the margins ; flowers axil- 

 lary, sessile, apetalous ; capsule small, rather square. () B. H. 

 Native of Lower Carolina, in swamps. Ludwigia microcarpa, 

 Michx. fl. bor. amer. 1. p. 88. Ludwigia glandulosa, Pursh. fl. 

 bor. amer. 1. p. 111. Habit almost of a species of Ammania. 



Small-fruited Isnardia. PI. procumbent. 



12 1. SPH/EROCA'RPA (D, C. prod. 3. p. 61.) stem erect, 

 branched, glabrous, hardly angular ; leaves alternate, linear- 

 lanceolate, acute at both ends, when young rather downy ; flowers 

 axillary, sessile, apetalous ; capsule globose, small, pubescent. 

 1(..B. H. Native of South Carolina, about Orangeburgh. Lud- 

 wigia sphaerocarpa, Ell. sketch. 1. p. 213. 



Hound-fruited Isnardia. PI. ^ foot. 



131. CYLI'NDRICA (D. C. 1. c.) stem erect, branched, glabrous, 

 subangular ; leaves alternate, lanceolate, hardly denticulated ; 

 flowers axillary, sessile ; lobes of calyx subserrated ; capsule 

 cylindrical. 7^. B. H. Native of Georgia, and perhaps of 

 South Carolina. Ludwigia cylindrica, Ell. sketch. 1. p. 13. 

 Jussiae'a brachycarpa, Lam. diet. 3. p. 331. Ludwigia hetero- 

 phy'lla, Poir. suppl. 3. p. 512. ? 



Cylindrical-faulted Isnardia. PI. 1 foot. 



141. LANCEOLA'TA (D. C. prod. 3. p. 61.) stem erect, twiggy, 

 angular, glabrous ; leaves narrow-lanceolate, glabrous, rather 

 decurrent ; flowers sessile, axillary, apetalous ; capsule cubical, 

 winged, "j!/ . B. H. Native of Georgia and Carolina, in marshes. 

 Ludwigia lanceolata, Ell. sketch. 1. p. 213. 



Lanceolate-]eaved Isnardia. PI. 1 foot. 

 "f" Species hardly known. 



15 I.? RAM6sA (D. C. prod. 3. p. 61.) stems procumbent, 

 rooting, branched, glabrous ; leaves opposite, linear-lanceolate ; 

 flowers nearly sessile, axillary. 1^. B. H. Native country un- 

 known. Ludwigia ramosissima, Roth. cat. 3. p. 24. ? but not 

 of Walt. Petals white, ex Willd. one half shorter than the 

 calyx, ex Roth. Capsule elliptic, ex Willd. tetragonal, ex Roth. 

 Stipulas joined to the leaves, ex Roth. Perhaps the plant of 

 Willd. is the same as that of Roth. 



Branched Isnardia. PL creeping. 



161. AURANTI'ACA (D. C. 1. c.) stem erect, branched ; leaves 

 sessile, ovate-lanceolate, alternate, acute, glabrous ; flowers ax- 

 illary ; petals length of calyx. Native of Newcastle, Dela- 

 ware, Chester, and Pennsylvania, in North America. Ludwigia 

 aurantiaca, Rafin. in Desv. journ. 1. p. 224. Flowers orange- 

 coloured. The rest unknown. 



Orange-coloured- flowered Isnardia. PI. 1 to 2 feet. 



Cult. None of the species are worth cultivating, except in 

 botanical gardens. Their culture and propagation is the same 

 as that for Ludwigia, see p. 697. 



Tribe V. 



C1RCJEEJE (plants agreeing with Circce a in important cha- 

 racters). D. C. prod. 3. p. 61. Tube of calyx not drawn out 

 beyond the ovarium, but dividing immediately (f. 100. a.), de- 

 ciduous. Fruit capsular, ovate-globose (f. 100. e.). Stamens 2, 

 one of which is usually converted into a petal (f. 100. &.). 

 Herbs or subshrubs. Leaves opposite, petiolate, cordate, or 

 ovate. Flowers racemose. 



XIV. LOPE'ZIA (in honour of Thomas Lopez, a Spanish bo- 

 tanist, who is said to have directed his attention to the natural 

 history of the New World). Cav. icon. 1. p. 12. t. 18. Juss. 

 gen. 3. p. 30. t. 30. f. 4. Schrank, pi. rar. hort. mon. t. 20. 

 nov. act. bonn. 9. p. 90. D. C. prod. 3. p. 62. Pisaura, 

 Bonat. mon. 1793. 



LIN. SYST. Mondndria, Monogynia. Limb of calyx 4- 

 parted (f. 100. #.), deciduous. Petals 4, irregular (f. 100. h.). 

 Stamens 2, only 1 of which bears an anther (f. 100. c.), the 

 other opposite, sterile, petal-formed (f. 100. b.), usually of a dif- 

 ferent colour from the true petals. Stigma capitate (f. 100. d.). 

 Capsule naked, subglobose (f. 100. e.), 4-celled, divided into 

 4 valves at the apex of the cells; valves adnate to the central 

 placenta by the dissepiments. Seeds small, numerous. Erect 

 herbs or subshrubs. Leaves toothed, alternate, rarely opposite. 

 Racemes terminating the stem and branches. Flowers small, 

 pedicellate, purple, or red. 



1 L. RACEMOSA (Cav. icon. l.p. 12. t. 18.) herbaceous, nearly 

 glabrous ; leaves alternate, ovate-lanceolate, serrated, tapering 

 to the base ; racemes terminating the branches ; bracteas much 

 shorter than the pedicels. . H. Native of Mexico. Curt, 

 bot. mag. 254. Bonpl. nav. t. 25. L. Mexicana, Jacq. icon, 

 rar. t. 203. Pisaura automorpha, Bonato, mon. 1793. with a 

 figure. Sterile stamen white. Petioles ciliated. 



/tacewose- flowered Lopezia. Fl. Aug. Oct. Clt. 1792. PI. 

 1 to 1| foot. 



2 L. CORDA'TA (Horn. hort. hafn. add. p. 949.) plant gla- 

 brous ; branches sulcately angular ; leaves alternate, roundish- 

 ovate, cordate, rather ciliated. O- H- Native of Mexico ? 



CWate-leaved Lopezia. Fl. Jul. Sept. Clt. 1821. PI. l|ft. 



3 L. coHONA*TA(Andr.bot. rep. 

 551 .)plant glabrous; branches an- 

 gular; leaves alternate, ovate,ser- 

 rated, attenuated at the base ; ra- 

 cemes terminating the branches ; 

 lower bracteas exceeding the pe- 

 dicels. Q. H. Native of Mex- 

 ico. Jacq. fil. eclog. t. 110. 

 L. axillaris, Schweigger, in Kce- 

 nigsb. arch. nat. 1812. p. 236. 

 L. minuta, Lag. gen. et spec. 1. 

 no. 1. L. Mexicana /3, coro- 

 nata, D. C. hort. monsp. 1813. 

 p. 39. Sterile stamen white. 



Crown-flowered Lopezia. Fl. 

 July, Sept. Clt. 1804. PI. 1| ft. 



4 L. MI'NIMA (Lag. ex Schrank, 



FIG. 100. 



