Page:Journal of botany, British and foreign, Volume 9 (1871).djvu/78

 66 FOKMS AND DISTRIBUTION OF BATKACHIUM.

tlie former shows indications of them, and iyitermedim has its receptacle hairy, and is usually referred to tripartitus.

1. TENELLUS.

n. tenelliis, Viviaui PL iEgvpt. (1830) ex Dietr. Synops. vol.iii. p. 312 (1843), non Gay (1834) nee Nutt. (1838), Walp. Repert. vol. i. p. 36.

In damp places at Alexandria, Egypt. Creeping. Leaves truncato- cordate, 3-lobed ; lobes rounded, obsoletely crenate. " Receptacle spicate, longer than the petals." I have not seen specimens of this form nor of the following.

2. SANICUL^FOLIUS.

R. saniculafoUns, Viviani, Florfc Libvcfe Specimen, p. 29. t. 11. f. 2, (1824).

In salt raarslies at Syrtis Major, Tripoli. Floating. Leaves 5-fid, on petioles about 2 inches long, with crenate lobes. Peduncles long. Petals three times the length of the calyx. Stamens 14-16.

3. LoBBii, forma nova.

R. hederaceus, var. Torrey in Rep. Exped. Whipple (1857).

North America. Oregon, W. Lobb ! 1852, n. 249. California, Bi- gelow ! near 35th degree of latitude in 1853-4, " with R. aquafiUs, L."

Quite glabrous, annual (?) Stem elongated, floating, 9-] 2 in. long. Submersed leaves none or rare, rudimentary and resembling adventitious roots. Floating leaves tripartite, truucato-cordate at base, \-\ in. wide ; lobes equal, oval or oblong, the lateral ones usually notched at apex ; petioles slender, ^-l-^ in. long ; stipules adnate to the petioles. Peduncles opposite the upper leaves, thicker than the petioles, \-\ in. long. Buds globose. Sepals -^ in. long, semi-elliptic, persistent, dark green with scarious margins ; petals ^ in. long, obovate-oblong, 3-5-(usually 3-) veined. Stamens 5-9, usually 6 ; filaments exceeding the heads of young carpels, anthers oval ; style lateral, slender, usually long and cm-ved. Carpels 4-6, usually 4, thicker upwards, large in fruit, -^ in. long by -^ thick ; receptacle small, depresso-globular.

Explanation of Plate CXIV. — Ranuncuhts hydrocliaris, Spenn., foraia Lobhii,'RiQvn. Fig. 1,2,3. From specimens in Kew Herbarium, collected in Cali- fornia by Bigelow. Fig. 4, 5. Lower portion of Mr. Lobb's specimen from Oregon. Fig. 6. Stamens and carpels. Fig. 7. Carpel-head. Fig. 8. Petal. Fig. 9. Carpel.

4. Lenormandi.

R. tripartitus, Dubourg d'lisigny in Catalogue des Plantes spont. de I'Arrond de Vire, seance publique de la Soc. Linneenne de Normandie, 1836; non De Cand. (1808). R. Lenormandi, E. Schultz in Flora, vol. XX. Bd. ii. p. 726 (1837). R. reniformis, N. Desportes Fl. Sarth. 3 (1838) ex Boreau, non Wall. List. n. 4709 (1828). R. liederacms /3. grandiflorus, Bab. Man. Brit. Bot. ed. i. (1843). Batrachitan Lenor- viandi, Fr. Sum. Yeg. Scand. vol. i. p. 139 (1846) ex Nyman. R. cccnosns, Bab. Man. Brit. Bot. ed. 3. p. 7 (1851).— Fig.— Eng. Bot. Suppl. t. 2930. Godr. Essai. f. 2. Cosson and Germ. Atl. t. i. f. 3, 4.

Occurs in Scotland, England, Wales, Ireland (teste Moore and More), France, etc. This form approaches both homuioplujllua and intermedins, and -were it not for the absence of submersed leaves Avould sometimes even remind one of small states oijlorihindus.

5. HOMffiOPHYLLUS.

R. omoiophylliis, Tenore, Fl. Neapol."vol. iv. p. 338 (1830). R. cceuosus, Guss. Fl. Sic. Prodr. Suppl. p. 187 (1834), non Bab. (1851). Butra- chium ccenosum, Duniort. FloiiU. Belg. (1827).

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