CHAP. cm.

SALICA'CEjE. sa lix.

1529

Group vii. Nigra;.

Extra-European Kinds allied to the Kinds of one or all of the three preceding

Groups.

Of the willows of Europe Koch has ( Comm .) associated the kinds of MrBorrer’s groups Pentandras, Fragiles, and A'lbae into one group, which hehas named Fragiles; and he has pointed out and described, as extra-European kinds belonging to it, S. occidentals Bose, S. nigra Miihl., S.babylonica L., S. octandra Sieber, and S. Humboldtifflrca Willd. Mr.Borrer has included S. babylonica L. in his group Fragiles. The rest arehere collected in a group by themselves, to which is added S. figustrinaMichx.jun., from the notice by Mr. Forbes, and also by Michaux, that it issimilar to S. nigra.

S 28. S. ni'gra Miihlenb. The black, or dark-branched American, Willow.

Identification. Miihlenb. in Nov. Act. Soc. Nat. Scrut. BeroL, 4. p. 237. t. 4. f. 5. > Sims and Konig’sAnn. of Bot, 2. 65.; Willd. Sp. PI., 4. p. 657.; Michx. N. Amer. Syl., 3. p. 78.; Pursh FI. Amer.Sept., 2. p. 614.; Smith in Rees’s Cyclo., No. 11. j Forbes in Sal. Wob., No. 152.; Koch Comm.,p. 17., note.

Synonymes, S . carolini&na Michx. FI. Bor. Amer. y 2. p. 226. 5 S. pent&ndra Walt. FI. Car ,, 243.;S. vulgaris Clayt. FI. Virg.

The Sexes. Both sexes are noticed in the specific character. Willdenow had seen the male alive,and both sexes in a dried state.

Engravings. Nov. Act. Soc. Nat. Scrut. Berol., 4. t. 4. f. 5.; Ann. of Bot., 2. t, 5. f. 5.; Michx. N.Amer. Syl., 3. 1.125. f. 1., without flowers; Sal. Wob., No. 152., the leaf; send fig. 152. in p. 1630.

Spec. Char., fyc. Leaves ovate-lanceolate, pointed, serrated, green on both sides, glabrous, except adowny rib and footstalk. Catkins accompanying the leaves, villous. Stamens about 5, bearded atthe base. Ovary stalked, ovate-lanceolate, glabrous. Stigmas divided, the length of the style.(Sal. Wob., p. 280.) Catkin upon a seeming penduncle, which is a leafy twiglet Stalk of the cap-sules 3—4 times as long as the gland. Stigmas ovate, emarginate. (Koch Comm., p. 17., note *)Branches of a dark purple colour. Disk of leaf 2 in. or more long. (Willd.) A tree, 20 ft. high,with smooth branches, brittle at the base; a native of North America, from Pennsylvania to Vir-ginia, on the banks of rivers. Introduced in 1811, and flowering in May. Mr. Forbes observesthat S. Zigfistrina of Michaux differs principally from S. nigra in its larger stipules, which resem-ble, as well as the leaves, those of S. tri&ndra. (Sal. Wob., p. 28.) There are plants in the Hackneyand Goldworth arboretums, and at Woburn Abbey .

& 29. S. HumboldtiaV^ Willd. Humboldt’s Willow.

Identification. Willd. Sp. PI., 4. p. 657.; Smith in Rees’s Cyclo., No. 8 .; Humb. et Bonp. Nov.Gen. et Sp. PL, 2. p. 176.; Forbes in Sal. Wob., No. 8.3 Koch Comm., p. 18., note; Lodd. Cat. ,ed. 1836. *

Tfe Sexes. Both sexes are figured in Sal. Wob., copied from Humb. et Bonp. Nov. Gen. et Sp. PI.Koch has noticed*(Com»z., p. 18., note) that in specimens which he had seen there were andro-gynous catkins mixed with catkins of female flowers.

Engravings. Humb. et Bonp. Nov. Gen. et. Sp. PL, t. 99. and 100 .3 Sal. Wob., No. 8 .: and fig. 8 .in p. 1604.

Spec. Char., <fc. Leaves, linear, acuminated, finely serrated, smooth. Catkinsappearing late, after the expansion of the leaves. Flowers polyandrous.Ovary stalked and glabrous. (Willd. Sp. PL, iv. p. 657.) Branches brown,shining, erect, flexible. (Sal. Wob., p. 115.) A native of Peru , and culti-vated in various places in South America . It was introduced in 1823; but,being somewhat tender, it had not, in 1829 (the date of the Salictum Wo-burnense), produced its flowers in England. Mr. Forbes finds, at Woburn,that it requires the protection of a green-house; but, in the HorticulturalSociety’s Garden, it stood out against a wall for 6 years; and, though it waskilled in the spring of 1836, Mr. Gordon is of opinion that it was notaltogether owing to its tenderness. There are plants in the collection ofMessrs. Loddiges.

* ? 2 30. S. Bonplandw'wj Humb. et Bonpl. Bonpland ’s Willow.

Humb. et Bonpl. Nov. Gen. et Sp. PI.. 2. p. 20.; Forbes in Sal. Wob., No. 9.n) . C ' S ' if, sexes are figured in Sal. Wob., copied from Ilumb. et Bonp. Nov. Gen. et Sp. PI. Am the Woburn collection had not flowered in 1829.

5** Hum b. et Bonpl. Nov. Gen. et Sp. PL, t. 101, 102.; Sal. Wob., t. 9 .3 and fig. 9. in