CORNACUJS. 



69 



Helwingia japonic a. 



Corokias are known, shrubs of New Zealand/ with alternate, per- 

 sistent, small, entire and coriaceous leaves. The flowers ^ are col- 

 lected in axillary or terminal clusters, more or less compound, rarely 

 simple, and the floral pedicel bears two lateral bracteoles. 



Kaliphora madagascariensis ^ is a shrub with alternate leaves, the 

 flowers of which much resemble in their general organization those 

 of the preceding types ; but they are unisexual. In the female flower, 

 the concave receptacle 

 partly lodges the inferior 

 ovary, which has two uni- 

 ovulate cells. ^ In the male 

 flower, the receptacle is 

 small, not concave, and 

 bears a short gamosepalous 

 calyx with four teeth, four 

 long alternate, valvate, or 

 slightly imbricate petals, 

 and four^ alternate stamens, 

 with bilocular and introrse 

 anthers. The short fila- 

 ments are inserted under a 

 circular disk which sur- 

 rounds the conical rudiment 

 of a sterile gynsecium. 



In Helwingia^ (fig. 52, 

 53),'' type of a sub-series {Helwingiece) often referred to other families, 

 the flowers are equally unisexual, dioecious, 3-5-merous. In the 

 female flowers, the inferior ovary is similar to that of Cornus, and 

 each of its cells encloses a descending ovary, with micropyle interior 

 and superior. It is surmounted by small calycinal collar in which 



Fig. 52. Floriferous 

 leaf of male. 



Fig. 53. Long. sect, of 

 female flower {^^). 



^ Hook. Icon. t. 424. — Raoul, Choix de PI. 

 Nonv.-Za. t. 20.— Hook. f. Fl. Nov.-Zel. i. 98 ; 

 Handb. N.-Zeal, Fl. 105. 



2 iSmall, yellowish. 



' Hook. r. Gen. 951, n. 10 ; Eook. Icon. ser. 3, 

 i. 16, t. 1023. 



* We cannot, for want of material, afl&rm the 

 primary direction of the micropyle, often lateral 

 at adult age. 



^ DecaisnE {Bull. Soc. Bot. Fr. xx. 157) has 

 removed this genus from the Cornacea because 

 its androecium is diplostemonous ; this is an 



error. There are as many stamens as petals. 

 The connective is slightly apiculate. 



6 VV. Spec. Fl. iv. 716.— Mokr. etDcxE. Obs. 

 PI. Jap. 5 ; Ann. Sc. Nat. ser. 2, \i. 68, t. 7. — 

 Endl. Gen. n. 2090. — Payee, Organog, 429, t. 

 109. -J. G. Agardh, Theor. Syst. Plant. 310. — 

 B. H. Gen. 939, n. 15.— H. Bx. Bull. Soc. Linn. 

 Par. 137. —Hook. Fl. Ind. ii. 726. 



7 The ovule has not two coats so distinct as in 

 the fig., a point impossible to determine pre- 

 cisely Irom dried specimens and aged ovaries, 

 probably only one as in At(cuba, Garrya, &c. 



