Campanulaceae. 



forms, while others again (new forms) run into each other to such an extent 

 that it is difficult to recognize specific distinction. While most of them are 

 shrubs or small trees, only those are included here which reach a height of about 

 18 to 40 feet. Delissea undulata, which attains a height of over 30 feet on Mauna 

 Loa, Hawaii (see plate XVI), is here omitted, as its stem is rarely thicker than 

 two inches. 



The genus Lobelia, which is represented by five very handsome species, some 

 reaching a height of 18 feet (L. macrostachys in Kau, Hawaii), possesses about 

 200 species, which are distributed over Africa and Soiith America, while very 

 few are to be found in Central America. They usually inhabit high mountains, 

 like Abyssinia, Ruwenzori, Kenia, etc., in company with arborescent Compositae. 



In the Hawaiian Islands the genus Lobelia is confined to the middle forest 

 zone, but does occasionally ascend into the upper forest zone to an elevation of 

 6500 feet. {L. hypoleuca, Puunianiau crater, Haleakala.) 



KEY TO THE GENEEA. 



Milky shrubs or trees with axillary inflorescences. 



Berry large yellow, an inch or more in diameter: 



Corolla deeply slit to the base; flowers 2-6 in simple cymes Clermontia 



Berry small, occasionally large, but then purple: 



Corolla slit beyond the middle, flowers in racemes Cyanea 



CLERMONTIA Gaud. 



Calyeine lobes either as long as the corolla and then bilabiate and deciduous or 

 shorter than the corolla, bluntly lobed or acute, free and persistent; corolla nearly uni- 

 labiate, staminal column free from the corolla; the two lower anthers penicillate, the 

 upper ones naked; fruit a globose or pear-shaped berry with a broad epigynous disc; 

 seeds brown shining. Shrubs or trees (with thick latex) branching candelabra like. 

 Inflorescence a two to many flowered cyme. 



The genus Clermontia, which is peculiar to Hawaii, consists of 17 species, 13 

 of which can be included in the term tree. 



The most common of the shrubby ones is C. macrocarpa Gaud., which grows 

 at an elevation of from 1000 to 2500 feet, and even higher, and is replaced in 

 the middle forest zone by C. persicaefolia, C. oblongifolia on Oahu, and C. dre- 

 panomorpha, etc., on Hawaii. Their branching habit is always candelabra-like, 

 and not more than 6 or 8 feet above the ground. 



KEY TO THE SPECIES. 



I. CLERMONTIA GENUINAE. . . , ^ „ -x, ..t- 



Calyx lobes connate, as long as the corolla; at maturity the entire tube falls with the 



corolla. 

 Peduncle two flowered. „„„„^jfl„..„ 



Peduncle long filiform pendulous C. grandiflora 



Peduncle arched, drooping, 1-10 cm long; fleshy, corolla dark piirple 



' ^ ' C. drepanomorpha 



Peduncle short, erect. 



Corolla and calyx not or little curved when open, slender, whitish 



C. persicaefolia 



Corolla and calyx strongly arched, green C. oblongifolia 



471 



