345 



never have come to such a conclusion. D. undiilafa is a simple-stemmed plant 

 reaching a height of 35 feet, bearing at the top of the less than 5 em thick stem 

 a single crown of leaves; the flowers are small and have three dorsal knobs. 

 D. subcordafa is a small branching shrub for the most 10 feet high; the main 

 stem rarely taller than 4 feet before branching; the flowers are twice the size of 

 the former species and have oifly one dorsal knob. 



The Ilillebrandiau arrangement is therefore the best and is here adopted as 

 the most satisfactoiy. 



Ilillebrand divides the genus into two sections: 



MACRANTHAE: Flowers over 3.75 cm lonu', curved and white. 



MICRANTHAE: Flowers less than '2.5 cm long, suberect and greenish 

 white. 



These two sections are adopted in the pi'esent paper. 



Delissea subcordata Gaud. Bot. \'oy. Uranie 457, pi. 77. 1826. 

 Prlissca tindulata A. Gray in Proceed. Am. Acad. V:148. 1862. in part. 



(Plate 195.) 

 A branching shrul) 1.5-3 m high, glabrous; leaves ovate, thin, membranaceous, 

 acuminate or acute at the apex, subcordate or subtruncate with nnsymmetrical 

 base, glossy above, paler, dull and glabrous beneath, 15-23 em long, 7-12 cm 

 wide, on petioles 7-18 em long, the margins unequally serrate, with acute teeth, 

 often laciniate at the base; racemes fleshy 7-10 cm many flowered, naked in the 

 lower fourth; pedicels 16-18 mm: bracts 3 mm; calyx tube ovoid-obtuse at both 

 ends, 5-dentate at the apex ; corolla falciform, 4.5 em long ampliate above, with 

 a single dorsal knob above the middle, the short lobes connivent ; berry ovoid- 

 oblong 15 nun long, S nun wide; seeds whitish, deei>ly wi'inkled. 



ILES SANDWICH : Gaudichaud, type in herbarium ^luseum Paris. 



OAHU: U. S. Exploring Exped. in Gray Herbarium; — Kaala Mts., ]Mann 

 et Brigham no. 573 in Herbarium Cornell and Gray Herbarium; — Kaalagebirge, 

 Wawra nos. 2224, 2229 in Herbarium Vienna; — Wailupe, Manoa, Nuuanu, Wai- 

 alua, Kaala, Hillebrand 1870, without number in Herbar. Berolinense and Gray 

 Herbarium ; — Pauoa Valley, near Tantalus, flowering June 1908, Rock no. 4859 

 in herbarium College of Hawaii ; — Niu Valley, flowering August 22, 1909, Rock 

 no. 4859-b in herbarium College of Hawaii. 



KAUAI : Hillebrand, not in his herliarium. 



The species is quite distinct and can never be taken for D. uiididnta, of which 

 A. Gray thinks it not even a form. 



D. subcordata is a much branching shrub, while D. iiiidtilala is single stemmed 

 and reaches a height of thirty feet or more, with a crown of leaves at the apex of 

 a slender stem. It also differs in the larger flowers, which have a single dorsal knob 

 instead of three, and in the much longer peduncle, the nmch larger leaves, and 

 large oblong berries. 



Gaudichaud 's type specimen in the Herbarium Paris consists of a single leaf 

 only. 



Mann's no. 573 is a robust ])lant with very large leaves; the fruits are olilong 

 and have a broad truncate apex. The specimen collected by the U. S. Exploring 

 Expedition consists of two leaves only. These are mounted on the same sheet 

 with a specimen of Ddissca inidulata collected by Remy, no. 300 bis, and pre- 

 sented bv the Paris ^Nluseum to Dr. Grav's herbaritnn. 



