Pittosporaceae. 



or white, tube 10 to 12 mm or less, lobes about 6 mm, stamens nearly as long as the tube, 

 anthers linear sagittate; pistil short, ovary sessile, oblong, tomentose; capsule globose- 

 ovoid, somewhat flattened, the thick woody valves 2.5 mm, wrinkled or rough or some- 

 times smooth; seeds purple, compressed and angled, closely packed in two rows in each 

 cell, testa dull, minutely tuberculate-rugose. 



A tree 20 feet in height with stiff, stout, ascending branches. It is a some- 

 what variable species; the inflorescence is not always terminal, but also axillary 

 and even cauline in specimens from Haleakala, Maui. The writer collected 

 specimens of this species from the type locality southern slopes of Haleakala, 

 Maui, where the tree is not at all common. It also grows near Kaupo at an ele- 

 vation of about 5000 feet. The leaves in the writer 's specimen are much larger 

 than those figured by Asa Gray. 



Hillebrand 's var. ft. from Kau and Kona agrees well with the writer 's material 

 from Lanai. The genus Pittosporum is exceedingly well represented on Lanai, 

 the species confertiflorum evidently being very variable, as there are as many dif- 

 ferent forms as there are Pittosporum trees and one would be naming individual 

 trees. It is indeed puzzling, the question of specific distinction in the Hawaiian 

 Pittosporums, thanks to the insects on which the plants depend for pollination. 



Hillebrand 's typical var. /?. occurs in nearly all the valleys of Lanai, as Kai- 

 holena, Mahana, Koele, and also on the ridges. It differs from the species in its 

 smaller leaves and lanceolate sepals, and is a small tree about 18 feet in height. 

 In some of the Lanai specimens the capsules are deeply wrinkled, and quad- 

 rangular, with perfectly flat valves 3 cm. each way; one specimen, No. 8109, 

 has a long bracteate peduncle of 4 cm., with large pedicellate flowers. 



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