BULLETIN



OF THE



TORREY BOTANICAL CLUB


FOUNDED BY WILLIAM HENRY LEGGETT, 1870


EDITOR


ALEXANDER WILLIAM EVANS


ASSOCIATE EDITORS

JEAN BROADHURSTWILLIAM GEORGE MARQUETTE
JAMES ARTHUR HARRISHERBERT MAULE RICHARDS
MARSHALL AVERY HOWEARLOW BURDETTE STOUT
NORMAN TAYLOR

NEW YORK

1915
PUBLISHED FOR THE CLUB
THE NEW ERA PRINTING COMPANY
LANCASTER, PENNSYLVANIA

Page 55

Vol. 42 No. 2.

BULLETIN

OF THE

TORREY BOTANICAL CLUB

_____________

February, 1915

Page 77

A new Hawaiian Cyanea

JOSEPH F. ROCK

(WITH PLATE 8)

The genus Cyanea belongs to the family Campanulaceae, subfamily Lobelioideae, and is endemic to the Hawaiian islands. It contains more species than any other Hawaiian genus of this subfamily, most of the species being arborescent. On the island of Kauai the species are few in number but decidedly distinct. On the islands of Maui and Molokai hey are more numerous but also more variable, certain of the species apparently merging into one another. The species describeed below is named for Mr. G. K. Larrison, superintendent of hydrography.

Cyanea Larrisonii sp. nov.

Stem fleshy, apparently not branching, foliose at the apex, puberulous: leaves linear-lanceolate, acuminate at both ends, minutely mucronate, pale whitish underneath, light green above, glabrous on both surfaces, midrib and veins prominent below, chartaceous, 20-23 cm. long (including a puberulous petiole of 15-118 mm.), 12-20 mm. wide, entire or minutely denticulate in the upper third: raceme 1 cm. long, four- to six-flowered, bibracteate at the middle; bracts 12 mm. x 1 mm.; pedicels 5-6 mm. long; calyx subglobose, dark purplish-black, 5 mm., minutely toothed, tomentulose; corolla slender, 3 cm. long, 3.5-4 mm. wide, dark bluish-black, slightly curved, thee dorsal slit extending beyound the middle, tomentose, especially near the apex; staminal column dark purple, glabrous, with a patch of purplish hairs at the base, anthers glabrous, pale, with purplish streaks, the two lower only tufted at the apex; stigma minutely two-lobed, scarcely protruding: berry (immature) globose, purplish-black.

KAUAI: Upper Hanalei Valley, on ridge betwen Hanalei and Kalihinui, elevation 1,800 feet, October 17, 1914, G. K. Larrison 10342. The type specimen is deposited in the College of Hawaii Herbarium.

Page 78

A very striking species, somewhat related to Cyanea recta Wawra, but differing from it in the linear-lanceolate leaves, which remind one of the leaves of Rollandia parvifolia Fobes; the very narrow corolla is almost straight and nearly black.

COLLEGE OF HAWAII,

HONOLULU, TERRITORY OF HAWAII.



Explanation of plate 8

CYANEA LARRISONII Rock

Fig 1. Part of plant, x 9.6.

Fig 2. Flower, x 1.4.

Fig 3. Longitudinal section of flower, x 1.4.

BULL. TORREY CLUB VOLUME 42, PLATE 8

CYANEA LARRISONII Rock