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SAG ITTA'RI A* *. 



Linnean Class and Order. Monce'cia f, Polya 'ndria. 



Natural Order. Alisma'ce/E, Dr. R. Brown . — Lindl. Syn. p. 

 253. ; Inlrod. to Nat. Syst. of Bot. p. 253. — Rich, by Macgilliv. p. 

 399. — Loud. Hort. Brit. p. 536. — Alismi'n.e ; type Alisma'cejE, 

 Burnett’s Outlines of Botany, pp. 422 & 423+. — Junci, sect. 3. 

 Juss. Gen. PI. pp. 43 & 46. — Sm. Gram, of Bot. p. 72. 



Gen. Char. Barren for stameniferous ) Flowers (fig. 1.) nu- 

 merous. Calyx (fig. 3.) of 3 egg-shaped, concave, permanent 

 sepals. Corolla (see fig. 1.) of 3 roundish, blunt, flat, spreading, de- 

 ciduous petals, thrice the size of the sepals, and alternate with them. 

 Filaments (figs. 3 & 4.) numerous, about 24, awl-shaped, collected 

 into a round head. Anthers upright, heart-shaped, much shorter 

 than the petals. — Fertile for pistilliferous J Flowers (fig. 2.) fewer, 

 below the barren ones. Sepals and Petals as in them. Germens 

 ( Ovaries of Lindl. y (fig. 6.) numerous, collected into a head, com- 

 pressed, tumid externally, tapering into very short styles. Stigmas 

 taper-pointed, permanent. Seeds (Nuts of Lind.) numerous, in- 

 versely egg-shaped, compressed, beaked, surrounded with a vertical, 

 dilated, compressed margin, broadest externally. Embryo simple, 

 undivided, folded. 



The calyx of 3 sepals ; the corolla of 3 petals ; about 24 stamens ; 

 numerous pistils ; and the numerous, bordered seeds ( nuts of Lind.) 

 will distinguish this from o*her genera in the same class and order. 



One species British. 



SAGITTA'RIA SAGITTIFO'LIA. Common Arrow-head. 



Spec. Char. Leaves arrow-shaped; the lobes spear-shaped, 

 straight. 



Enel- Hot. t. 84. — Linn. Sp. PI. p. 1410. — Huds. FI. Angl. (2nd ed.) p. 420. — 

 Sm. FI. Brit. v. iii. p. 1023. Engl. FI. v. iv. p. 144. — With. (7th ed.) v. iii. p. 

 688. — Lindl. Syn. p. 253. — Hook. Brit. FI. p. 406. — Sibth. FI. Oxon. p. 178. — 

 Abbot’s FI. Bedf. p. 209.— Purt. Midi. FI. v. ii. p. 467. — Relh. FI. Cant. (3rd 

 ed.) p. 3J4. — Loud. Encycl. of Gard. p. 768, paragraph 1411. — FI. Devon, p. 

 154. — Walk. FI. of Oxf. p. 280. — Perry’s PI. Varvic. Select®, p. 78. — Bab. FI. 



Fig. 1. Barren or Stameniferous Flower.— Fig. 2. Fertile or Pistiliferous 

 Flower. — Fig. 3. Calyx and Stamens. — Fig. 4. A single Stamen. — Fig. 5. Seed, 

 or Nut, a little magnified. — Fig. 6. Germen. — Fig. 7. Part of a Leaf-stalk. — 



Fig. 8. A Tuber. 



* From Sagitta, Lat. an Arrow ; from the form of the leaves resembling the 

 head of an arrow. f See Bryonia dioica, fol. 83, note f. 



t “ Outlines of Botany ; being a Practical Guide to the Study of Plants. By 

 Gilbert T. Burnett, Professor of Botany in King’s College, London, and 

 Fellow of several Societies.” Octavo, 1833. London: published by John 

 Churchill, 16, Prince’s Street, Soho. — Professor Burnett has rendered very 

 essential service to the science of Botany by the publication of this excellent 

 Work, which is not only replete with scientific instruction, but abounds also in 

 useful practical matter, and amusing information ; it is, indeed, one of the very 

 best books that can be recommended to all interested in the delightful science on 

 which it treats. The young Botanist, more especially, will find it a most va- 

 luable acquisition to his library, as the great number of excellent Wood-cuts, 

 illustrative of the different subjects described, will greatly facilitate his studies, 

 and enable him to understand, with ease, those particular parts of Plants, on 

 which the characters of the Classes, Orders, Sections. Types, §c. are founded. 

 Not only to the Botanical, but also to the Medical Student, and the Naturalist, 

 it will be found a most valuable work, and will amply repay a careful perusal 

 of its pages. 



