UMBELLIFERyE. I. HYDROCOTYLE. 



249 



inches long, but rather shorter than the peduncles ; pedicels 3-6 

 lines long. 



Barbarossa Penny-wort. PI. cr. 



6 H. UMBELLA'TA (Lin. spec. p. 234.) plant glabrous ; leaves 

 peltate, orbicular, emarginate at the base, doubly crenated, 

 usually 11-12 nerved ; scapes rather shorter than the petioles ; 

 umbels 20-30-flowered ; flowers distinctly pedicellate. %.. B. F. 

 Native of the West Indies, Peru, and at Tampico in the Bay of 

 Mexico, as well as of Cuba and North America. Spreng. umb. 

 p. 1. t. 1. f. 1. Rich. hydr. p. 28. t. 52. f. 3. Umbels prolifer- 

 ous in the specimens received from Tampico, but simple in those 

 from Cuba. Corolla white. Acaricoba, Piso, bras. p. 9. Co- 

 tyledon aquatica, Sloane, jam. 1. p. 212. 



Var. ft, umbellulata (Michx. fl. bor. amer. 1. p. 161.) leaves 

 obsoletely crenated, 9-nerved ; scapes rather longer than the 

 petioles; umbels 12-16-flowered. If.. B. H. Native of Carolina 

 and Virginia. Rich. hydr. p. 29. t. 53. f. 4. H. umbellata, 

 Pursh, EH. 



Umbellate-Rowered Penny-wort. Fl. July, Aug. Clt. 1795. 

 PI. cr. 



7 H. BONARIE'NSIS (Lam. diet. 3. p. 147.) plant glabrous ; 

 leaves peltate, orbicular, 15-20-nerved, doubly crenated; scapes 

 hardly longer, but often shorter than the petioles, umbellate at 

 the apex, and umbellately branched ; flowers disposed in inter- 

 rupted whorles along the branchlets. I/ . B. F. Native of South 

 America, in marshy places not far from the sea, where it assumes 

 various forms. Chain, et Schlecht. in Linnaea. 1. p. 357. H. 

 umbellata /3, Bonari^nsis, Roem. et Schult. syst. 6. p. 345. 



Var. a, multiflora (Ruiz et Pav. fl. per. 3. p. 24. t. 246. f. a.) 

 rays of umbel 8-10 ; whorles consisting of 15-20 flowers each. 

 If.. B. G. Native of Brazil, Peru, Buenos Ay res. H. Bonari- 

 ensis, Rich. Cav. icon. 5. t. 488. 



Var. ft, tribotrys (Ruiz et Pav. 1. c. f. b.) rays of umbel 3 ; 

 whorles 5-6-flowered. I/ . B. Native of Peru and Brazil. H. 

 polystachya a, Rich. hydr. p. 31. 



Buenos Ayrcan Penny-wort. Fl. July, Aug. Clt. 1810. Pl.tr. 



8 H. PETIOLA V RIS (D. C. prod. 4. p. 60.) plant quite glabrous: 

 leaves peltate, orbicular, 10-12-nerved, simply and broadly cre- 

 nated, on long petioles ; scapes equal in length to the petioles, 

 umbellate at the apex, and umbellately branched ; branches 2-5, 

 interruptedly verticillate. If. . B. F. Native of the Mauritius. 

 H. vulgaris, Bory, voy. ex Rich. H. quinqueradiata, Pet. Th. 

 mss. ex Rich. H. polystachya ft, Rich. hydr. p. 31. Nearly 

 allied to H. Bonariensis, but differs in the lobes of the leaves 

 being simply crenated, in the petioles and scapes being nearly a 

 foot high. Fruit nearly orbicular, emarginate at the base ; 

 mericarps furnished witli one rib on each side. 



Pelwlar Water Penny-wort. PI. 1 foot, cr. 



9 H. LANGSDO'RFII (D. C. prod. 4. p. 60.) plant glabrous or 

 rather pilose on the leaves while young ; leaves peltate, nearly 

 orbicular, with 5-7 short lobes, crenated, 5-7-nerved ; peduncles 

 much longer than the petioles ; umbel simple, containing 15-20 

 pedicellate flowers, surrounded by an 8-10-leaved reflexed in- 

 volucrum. Tf.. B. F. Native of Brazil, in the Island of St. 

 Catharine. Stems long, creeping, slender. Peduncles 5-8 inches 

 high. Adult leaves glabrous on both surfaces ; lobes either 

 acute or obtuse. Pedicels 3 times the length of the involucrum. 



Langsdorf's Penny-wort. PI. cr. 



10 H. GRA'CILIS (Ruiz et Pav. fl. per. 3. p. 26. t. 247. f. 6.) 

 leaves peltate, orbicular, 7-angled, 7-nerved, glabrous, crenated ; 

 petioles and scapes hairy ; scapes shorter than the petioles ; 

 umbels 5-7-flowered. 3f.. B. F. Native of Peru, in stagnant 

 watery places, and on the edges of rivulets. Rich. hydr. p. 32. 

 Stems creeping. This species differs from all others in the 

 present section in the leaves being acutely angled. 



Slender Penny- wort. PI. cr. 



VOL. III. 



1 1 H. HUMBO'LDTH (Rich. hydr. p. 33. t. 53. f. 6.) leaves 

 peltate, 5-6-lobed, hairy on both surfaces : lobes short, ovate, 

 acute, doubly serrated ; petioles, stems, and peduncles glabrous ; 

 umbels simple, 20-flowered ; fruit orbicular, nearly without ribs. 

 Tf.. B. F. Native of the kingdom of Quito. I/. B. et Kunth, 

 nov. gen. amer. 5. p. 32. but H. Humboldtii, Willd. herb, is 

 distinct from this, but is referrible to H. Bonplandii. 



Humboldt's Penny-wort. PL cr. 



12 H. ASTE'RIAS (Cham, et Schlecht. in Linnaea. 1. p. 

 361.) stems decumbent, at length glabrous ; leaves peltate, pe- 

 tiolate, 3-5-lobed, at length glabrous : lobes lanceolate, unequally 

 serrated ; peduncles longer than the petioles ; umbels simple, 

 14-18-flowered ; fruit tubercular, emarginate at the base, with 

 conspicuous ribs. J? . B. S. Native of Brazil, within the tro- 

 pics. Lobes of leaves usually 4, of various breadths. H. varians, 

 Pohl, in litt. 



Starry Penny-wort. PI. decumbent. 



13 H. ACONITIFOLIA (Rich. hydr. p. 35. t. 53. f. 5.) leaves 

 peltate, orbicular, hairy on both surfaces, 7-lobed, 7-nerved : 

 lobes lanceolate, acute, doubly serrated ; petioles, peduncles, and 

 stems glabrous ; umbels simple, 20-30-flowered ; fruit orbicu- 

 lar, nearly without ribs. 2 . B. G. Native of New Granada, 

 in shady places. H. B. et Kunth, nov. gen. amer. 5. p. 23. 



Monk's-hood-leaved Penny-wort. PI. cr. 



14 H. MACROPHY'LLA (Pohl, in litt. 1828.) plant creeping; 

 leaves peltate, 7-cleft, 7-nerved, rather hispid above, especially 

 along the nerves, glabrous beneath ; lobes lanceolate, doubly 

 serrated ; petioles and peduncles very long, glabrous ; umbels 

 simple, 40-50-flowered ; fruit ribbed, emarginate at both ends. 

 y.. B. F. Native of Brazil. Leaves 6 inches in diameter. 

 Hairs crowded at the tops of the petioles at the insertion of the 

 leaves, 



Large-leaved Penny-wort. PI. cr. 



15 H. QUINQUE'LOBA (Ruiz et Pav. fl. per. 3. p. 25. t. 248. 

 f. b.) plant hairy ; leaves peltate, 5-nerved, palmately 5-cleft : 

 lobes acute, doubly serrated : the terminal or middle lobe longer 

 than the rest ; peduncles equal in length to the petioles ; umbels 

 simple, many flowered, globose. If. . B. F. Native of Peru, in 

 woods at Pillao ; and of Brazil near Corvo-Sicco. Rich. hydr. 

 p. 34. Cham, et Schlecht. in Linnaea. 1. p. 360. The whole 

 plant is rufous from pili. Pedicels 40-50 in each umbel, and 

 when bearing the fruit they are about 3 lines long. Fruit emar- 

 ginate at the base ; mericarps acutely 3-ribbed on the back. 



Five-lobed-\eaveA Penny-wort. PI. cr. 



16 H. STE'LLA (Pohl, in litt. 1828. ex D. C. prod. 4. p. 61.) 

 stems decumbent, villous ; leaves on long petioles, peltate, 5- 

 nerved, 5-cleft, villous on both surfaces: lobes broad-lanceolate, 

 doubly serrated, rather unequal ; umbels on long peduncles, 

 many rayed ; fruit pilose, ribbed, emarginate at the base. If . B. 

 F. Native of Brazil. Perhaps sufficiently distinct from the 

 preceding species. 



jSter-leaved Penny-wort. PL decumbent. 



17 H. BATRACHIOIDES (D. C. prod. 4. p. 667.) plant glabrous; 

 stems rooting at the nodi ; leaves on long petioles, somewhat 

 peltate, 3-5-parted : lobes cuneated, obtuse at the apex, entire 

 or 2-3-cleft ; peduncles much shorter than the petioles ; umbels 

 3-5-flowered. If . B. F. Native of Chili, in inundated places 

 near Rancagua, and in ditches. H. ranunculoides, Bertero, 

 herb. ; but not of Lin. Habit almost of Ranunculus aqudtilis or 

 R. tripartita. 



Batrachium-like Penny-wort. PL cr. 



18 H. POEPPI'GII (D. C. 1. c.) plant furnished with a few scat- 

 tered hairs ; stems weak, elongated, not rooting at the nodi ; pe- 

 tioles long, hairy at the apex ; leaves orbicular, cordate with 

 the recess open, 9-nerved, bluntly 9-lobed, toothed ; peduncles 

 axillary, and opposite the leaves, shorter than the petioles ; 



Kk 



