32 MR. C. BAILEY ON THE STRUCTUKE ETC. 



small-celled epidernij which rises very sharply from the 

 large parenchyma-cells of the leaf. 



" § Caulinia^ Willd. — Spine-teeth absent from the stem 

 and backs of leaves. Flowers in most species monoecious 

 (? in all). Anther one- to four-chambered. Seed-shell 

 formed of three layers of cellular tissue. Conducting 

 bundles of the stem divided from the intercellular spaces 

 by a layer of parenchyma-cells ; leaf without the small- 

 celled epiderm.^^ — Beitr'dge, pp. 55, 56. 



The plant which forms the subject of this notice belongs 

 to the section Caulinia, and its synonymy and principal 

 book-references are the following : — 



III. Synonymy of the Plant. 



Najas graminea, Delile, Flore de I'Egypte ; Memoire sur les plantes qui 



croissent spontanement en Egypte, par Alire EafFeneau Delile, p. i ; 



Florse ^gjptiacas illustTatio No. 874, p. 75 ; Explication des planches, 



p. 282, pi. 50. fig. 3. 



Chamisso, Aquatics qujedam diversge affinitatis; Liniisea, vol. iv. 1829, 



pp. 502, 503. 

 Kunth, Enumeratio Plantarum. &c., torn. iii. p. 115. 

 Boissier, Flora Orientalis, vol. t. p. 28, 



Compendio della Flora Italiana compilato per cura dei Professori 

 V. Cesati, G. Passerini, e G. Gibelli, par. i. p. 205. 

 Najas alagnensis, PoUini, Horfc. et provinc. Veron. pi. nov. vel min. cogn. 

 p. 26 ; Flora Yeronensis quam in prodromum Florae Italige septen- 

 trionalis exhibit Cyrus PoUinius, torn. iii. p. 49 (1824). 

 L. Eeicheubach, Flora Germanica Excursoria, No. 920, p. 151. 

 Chamisso, Aquaticse qusedam diverste affinitatis ; Linnasa, toI. iv. p. 502 



(1829). 

 Antonii Bertolonii, M.D., Flora Italica sistens plantas in Italia et in 

 insulis cir cum stantibus sponte nascentes, torn. x. fasc. iii. p. 296. 

 Naias serristi'pula, Nocc. et Balb. Ic. Fl. Ticin. tab. 15 ex specim. sice. 



delineata. 

 Naias tenuifolia, Aschers., Atti della Societa Italiana di Seienze natural!, 



pp. 267 & 268 ; non E.. Br. 

 Najas graminea, Del., var. Delilei, Magnus, Berichte der deutschen bota- 



nischen Gesellschaft, Band i. Heft 10, Jahrg. 1883, pp. 522 & 523. 

 Caulinia alagnensis, PoUini, Plant. Veron. 26. 

 Diar. Brugnatelli Giorn. ann. 18 16, t. ix. p. 175. 



