Contributions to the Knowledge of the Forest Flora 



of Japan, II 



M. Shirai. 



With PL II. 



2. Loranthus Tanakse (Fr. et Sav.) 



Nam. Jap. Hozakinoyadoriki. *f Ks t s * K 9 %• 



(Order Loranthacese). 



Plate IT. Fig. 1, branch with flower; 2, different views of flower; 

 3, flowers with calyx and corolla removed ; 4, petal ot the inner whorl ; 

 5, petal of the outer whorl with stamen ; 6, stamen of the outer staminal 

 whorl : 7-8, diagramatical vertical view of the flower buds ; 9, floral 

 diagram ; 10, branch with fruit ; 11, fruit ; 12, vertical section of fruit 

 showing embryo in the seed; 13, cross section of fruit;. 14, branch of the 

 host plant (Quercus grosseserrata) with parasite (Loranthus Tanakse) ; 15, 

 cross section of a branch of the host plant, showing the distribution of 

 roots of the parasite; 16, vertical section of a branch of the host plant 

 attacked by L. Tanakfe, showing the course of the roots of the parasite ; 

 17, surface view of the growing apex of the parasite ; — all except 1, 10, 

 11, 12, 13, 14, 15, 16 and 17 enlarged. 



Parasitic bushy shrub, dichotomously branching. Branches angular 

 when young, becoming terete as they increase in thickness. Bark glossy, 

 of a castaneo-brown color, dotted with roundish lenticels. Leaves opposite, 

 deciduous, subsessile, about 2 inches long, obovate-cuneate or oblong-ovate, 

 narrowed at the base to a very short petiole, rounded or pointed at the 

 apex, sometimes cuspidate, entire, subundulate, glabrous and penninerved ; 

 nerves indistinct. Spikes as long as the leaves, solitary, terminal to the 

 young lateral shoots at the apex of the branches of last year, each of 

 which shoots bearing commonly 3 pairs of leaves. Flowers minute j inch 

 in diameter, hermaphrodite, yellowish, 11-14 in number, opposite, on a 

 slender 4-angled rachis. Petals distinct, 4-6 in two rows, -| inch long, 

 ovate or oblong, acuminate, puberulous at the margin; those of the inner 

 row shorter and smaller than those of the outer raw. Stamens 4-6 in 

 two rows, outer ones longer than inner and slightly adhering at the base 



