152 



NATURAL HISTORY OF PLANTS. 



with multiovulate carpels, and presenting, besides the perianth of 

 numerous unequal imbricated leaves, a valvular membranous sac of 

 a single piece considered by botanists as a calyx. At flowering time 

 this sac is torn irregularly from above downwards into two, three, 

 or four unequal caducous lobes. We then see the interior leaves, of 

 very variable number, inserted in a spiral on a fairly elongated 

 receptacle, the turns of which are more widely separated on a level 

 with the androceum. This consists of a large number of unequal 

 stamens. In the flowers of I). Wi/iteri' (tigs. 200-202), famous 

 for producing the Winter bark, there are often more than fifty 

 stamens, shorter as they are more inferior, and each consisting of a 

 flattened filament and a two-celled extrorse anther, dehiscing longi- 



Fio. 201. 

 Diagram. 



Drimys Winteri. 



Fig. 202. 

 Longitudinal section of flower. 



tudinally.' The sessile carpels, about five in number,' free, and 

 forming a crown around the summit of the receptacle, on which 

 they are articulated, consist each of a unilocular ovary and a very 



H. IJ. K., Nov. Oen. et Spec. PI. ^quin., l, t. 

 58. — Magallana CoMM. — Canella DoMB. (nee 

 I'. \\\i.).— Jiin<pte MoL. (ex. Endl., JJwcAr., 428). 

 — Tasmannia \{. Hii., ex DC. Syst. Veg.,\.^\!b ; 

 I'radr., loc. ril., n. 4. 



' FousT., /w. rj7. — Fkcill , Oi*., iii. 10, t. 

 6.— not. Mag., t. 4800.— MiKKS, vp. cil., 135, n. 

 B. — KiCHL., ill Maiit. Flor. Bras., Maqnoliac., 

 132. t. 30-32.— i>. punctata Lamk., Did., ii. 

 330; ///.. t. 494, fig. \.—D. aromaiica Dks- 

 foUKT., Fl. Ant., i. t. 10. — U. poli/morpha 

 Sl'ACll, op. rit., 437. — li'lnterana aromatica 

 Sol., loc. cil.,\,.\. — li'intera (iromalicn Ml'uit., 

 loc. cit. ; App. Med., iv. 007. — W., Sp,v. Plant., 

 ii. 1231). Thin Hpecios \» the tvi»o of llio section 

 Winlera (DC, Synt., i. 413) tliiiH chariicterized : 

 " Calyx 2, ^■partilut aul 2, 'A-arpalus." 



' The celiii are soinetimoM close tojjetlier nil tlio 

 way, unci iioinetiincri diverging towurdri the biuc. 

 The pollen of Drimya liaa been dcacribcd by H. 



Mom {Ann. Sc. Nat., ser. iii. 179) as formed ot 

 grains aggregated into fours ; tlieir relative places 

 are those which they would occupy if placed at 

 the vertices of a regular tetrahedron. In the 

 pollen of L. yranatensis, for niiiny authors a 

 variety of 1). Winteri, we have seen a largo de- 

 j)re8sed pit occupying the centre of each of these 

 grains. On wetting the pollen tlie depression 

 di-iappears, and in its place the walls of the cell 

 form a dome shaped projection recalling those 

 seen nt the angles of the pollen grain of certain 

 Onayr<uie(C. F,iiiiLKU hiis also recently figured 

 the pollen of D.\l'interi[Flor. Bras., Maynuliac, 

 t, 30, fig. 12). 



' There are rarely more in the typical 8))oeie8. 

 In D. granatenxis are as many iis eight or ten. 

 In several forms from South Americu wo may 

 find flowers with only three, two, or even one 

 carjK'l, as in the si)ocies of the section Tag. 



mnnniii. 



