^cer.] ACERINE^. 



113 



root, as is the case with many species of the genus JPicus. Bark smooth, ffreen when young, white when 

 fully grown. The wood is fine, white, and close-grained, very tough, and susceptible of a good polish- 

 From the slender branches of this tree the native tribes make the hoops of their scoop-iietSy which are em- 

 ployed for taking sahuon at the Rapids, and in the contracted parts of the river. Fl. April, May."— This 

 species is remarkable for the nerves radiating from one point. I find flowers of three kinds: — 1. Male 

 flowers, with oval crisped petals, and no gland at their base, and no trace of a pistil; in lieu of it, a small 

 tuft of white hairs j the stamens inserted upon a large orbicular fleshy gland. 2. Female flowei-s, with two 

 styles to the germen, which, with the eight imperfect stamens, are inserted upon the receptacle, but having 

 five small fleshy glands, at the base of which the linear petals are inserted. 3. Flowers with ovate crisped 



petals, eight perfect stamens, which, with the monogynous germen, are inserted upon a large circuhir 



fleshy disk. 



Tab. XXXIX. Acer circinatum ;— naiwra? size. Fig. 1, Male flower; ^^r. 2^ Fertile do.; Jig, 3, advanced 

 pistil : — magnijied. 



5. A. barbatum ; foliis ovato-cordatis breviter 3-Iobis inaequaliter serratis subtus ad 

 nervos piibescentibus glaucisque, pedunculis pilosis masculis ramosis, fcEiiiineis siniplici- 



bus, calycibus intus barbatis, capsuloe alis erectis, Ph, — Mich, Am. v. 1. p. 252. Pursh^ f) 

 FL Am. V. 1. p. 267, Elliott^ Carol, v. 1, p. 451. De Cand. Prodr. v, 1. p. 595. Torrey, 

 Fl. of Un. St. V. L p. 396. 



Has. Vallies near springs on the west side of the Rocky Mountains, about the sources of the Columbia. 

 Douglas. — I rely upon the indefatigable Douglas for the correctness of this name; his specimens, in my 

 possession, being too young to enable me to form an opinion. According to Pui-sh, it inhabits the country 

 between New Jersey and Carolina. I have seen no authentic specimen; nor am I aware that a figure of it 

 is anpvhere published. 



6. A. saccharinum; foliis cordatis glabris subtus glaucis seu pallidis palmato-3-5-lobis, 

 sinubus obtusis, lobis acuminatis sinuato-incisis, corymbis breviter pcdunculatis nutanti- 

 bus, fructibus glaberrimis, alis subdivergentibus. — Linn. Sp. PL p. 1496. Mich, Am. v. 1. 

 p, 252, Arb, (ed. Am.) v. 1. 1 42. Pursh, FL Am. v, \, p. 266. Elliott^ Carol, v, I. p, 450. 

 De Cand, Prodr. v, 1. p, 595. BigeL FL Bost. ed. 2. p. 378. Tm-rey, FL of Un. St 

 v.l. p. 398. 



Hab. Canada ; apparently most common in the southern parts. — My specimens from Dr. Todd, gathered 

 at Lake Huron, which, indeed, are the only ones I possess from British North America, have the leaves 

 more rigid, the sinuses broader, and the margins less divided than in Dr. Boott's specimens from near Boston, 

 and are probably the A. nigrum or Black Maple of Michaux*s Forest-Trees, Both are valuable for their 

 timber, and for the quantity of sugar produced by them. Mr, Douglas observes that some of the largest 

 Sugar-Maples in America are on Goat Island at the Falls of Niagara. 



7. A. dasycarpum; foliis cordatis saepe basi truncatis glabris subtus glauco-albidis 

 palmato-5-lobisj sinubus obtusiusculis, lobis tenuiter acuminatis incisis serratisque, flori- 

 bus conglomeratls breviter pedicellatis " pentandris apetalis," germinibus tojucatosis, 

 fructu glabro, alis superne latioribus falcato-incurvis. — Willd. Sp, PL i\ 4-. p. 485. Pursht 

 Fl. Am. v.l, p. 2QQ, Elliott, CaroL v. I, p. 449. BigeL Fl. Bost. ed. 2. p. 379. Torre?j, 

 FL of Un. St. V. 1. p, 396. Mich, Am. v. L p, 253. Desf. Ann. du Mus. v. 7. p. 412. 

 t. 25. Mich. Arb, (ed. Am.) v. l.t 40. De Cand. Prodr, v. I. p. 595. 



Hab. Lake Huron. Dr. Todd. — This forms a lai^e tree, known in the United States by the name of 



White or Soft Maple, and is said to yield a good sugar. In the southern States it is very abundant, but 



rarely within forty miles of the sea. The young leaves and young gennens are very downy; but the old 



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