Sapotaceae. 



and close, connected by an intra-marginal nerve; flowers in clusters of 2 to 4 on tomen- 

 tose pedicels of about 20 mm; calyx 5 lobed, (3 int. 2 ext.) broadly ovate, covered with a 

 rusty brown tomentnm, the two inner only pubescent on the exposed parts; corolla 

 glabrous, slightly longer than the calyx, parted to little beyond the middle into 5 obtuse 

 broad lobes, 6 mm, includ. the corolla tube; staminodia linear in front of the sinus; 

 stamens inserted at the base of each lobe, perfectly glabrous, anthers sagittate, opening 

 laterally, included; ovary conical densely hirsute with long stiff hair, 5-celled with one 

 ascending ovule in each cell; style short, grooved at the apex; berry globose, or pear- 

 shaped, to obovate, black, 3 cm in diameter, or 3 to 4.5 cm when obovate or ovate, 

 rather dry, 5 to 1 seeded, each seed enclosed in a thin chartaceous pyrena, 20 mm long, 

 8 mm thick when single, more or less compressed when many, the crustaceous testa yel- 

 lowish brown and shining, the elongate scar of the raphe occupying nearly the whole 

 central angle; cotyledons nearly as long and broad as the albumen, the minute radicle 

 inferior. 



The Alaa is a fine tree of often 50 feet in height and is conspicuous in the 

 forest by its leaves, which are of bronze to reddish brown color underneath, due 

 to a hairiness of that color. It is usually found in the dry districts of nearly all 

 the islands, and is especially common on Lanai in the valleys of Kaiholena and 

 Mahana. On Maui big trees can be found above Makawao, in the gulches of the 

 north-western slopes of Mt. Haleakala, as well as at Auahi, on the south side of 

 the said mountain. On Hawaii this species is wanting, but the genus is repre- 

 sented by another species, S. auahiense var. aurantium Rock, with globose orange 

 colored sessile fruits. The natives employed the milky sap as a bird glue. Hille- 

 brand remarks in his Flora that the fruit of this tree is rarely met with perhaps 

 on account of dimorphism in the flower. This the writer cannot verify, as all 

 the trees found by him bore fruit in abundance, with the exception of on Kauai, 

 where none of the trees bore perfect fruits, but were all abortive and conse- 

 quently of very small size. The fruits are not always globose, but are quite often 

 ovate, obovate and even long pear-shaped and of a black color. It inhabits 

 mainly the dry districts, but can also be found along the Manoa Valley trail and 

 Tantalus on Oahu, as well as at Kahuku, Waialua, and the Waianae range. 



Hillebrand records a variety ft. auratum with leaves and calyx, as well as co- 

 rolla, densely ferruginous. The flowers are also generally single. Collected by 

 Hillebrand on the dry forehills of Molokai and Lanai. From the latter islands 

 the writer collected material which he must refer to this variety, though the 

 flowers are not always single but often two in each leaf axil. Rock, Lanai, Kai- 

 holena Valley, July, 1910. No. 8064. 



Sideroxylon Ceresolii Rock spec. nov. 



Leaves perfectly glabrous when old, chartaceous, (not thick leathery) obovate-oblong, 

 bluntly acuminate, gradually tapering into a margined petiole of 2.5 to 3 cm; fruits single 

 in the axils of the leaves, on peduncles of 5 mm, berry ovoid, acuminate at the apex, 

 grayish-white in color, very soft and fleshy, 4 cm long, 2.5 cm wide, yellowish inside, 

 5-seeded, seeds elliptical-elongate, acute at both ends but not beaked, or somewhat obtuse, 

 thin flat, dull brown, mottled, 24 mm long, 10 rnm wide at the middle, testa rather thin, 

 the raphe not quite as long as the ventral angle; cotyledons as broad as the albumen but 

 only 2/3 its length, the inferior radicle 8 mm long, protruding half its length. 



Collected on the Island of Maui in Waihou gulch on the northwestern slope 

 of Mt. Haleakala, elevation 3000 feet, in company with my friend, Dr. P. Cere- 



385 



25 



