402 CAMPANULACEZ. | Wahlenbergia. 
Flowers usually blue or white. Calyx-tube adnate to the ovary ; 
limb 5-partite, rarely 3-4- or 6-7-partite. Corolla regular, cam- 
panulate or more or less tubular at the base ; lobes as many as the 
divisions of the calyx, valvate. Stamens free from the corolla; 
filaments often dilated at the base; anthers oblong, free. Ovary 
2-5-celled; ovules numerous; style cylindric; stigma 2-5-fid. 
Capsule 2-5-celled, opening loculicidally within the calyx-lobes 
with 2-5 valves. Seeds numerous, small. 
A large genus of about 80 species, most numerous in South Africa, but not 
uncommon in other parts of the Southern Hemisphere ; rare in the tropics or in 
the north temperate zone. 
Annual. Stems leafy, usually branched. Leaves never 
rosulate. Corolla 5-lobed, much longer than the calyx 1. W. gracilis. 
Perennial. Leaves rosulate or crowded on the short stems. 
Corolla 5-lobed, much longer than the calyx .. . 2. W. saxicola. 
Perennial. Leaves crowded, spathulate, with thick white 
cartilaginous margins. Corolla 5-partite nearly to the 
base, altogether included within the calyx-lobes .. 3. W. cartilaginea. 
1. W. gracilis, A. D.C. Monog. Camp. 142.—An exgeedingly 
variable annual or rarely perennial herb. Stems slender, angled, 
3-24 in. long, erect or decumbent at the base, simple or branched, 
glabrous or more or less hispid with stiff white hairs. Lower leaves 
34-2 in. long, obovate or spathulate to lanceolate or linear, often 
narrowed into a more or less distinct petiole, entire or sinuate- 
toothed; margins often cartilaginous; upper leaves smaller and 
narrower, sometimes almost subulate, sessile, entire or sinuate. 
Peduncles slender, terminating the branches, very variable in 
length. Flowers +-4 in. long, dark or pale blue, sometimes almost 
white. Calyx-tube from ovoid to narrow-obconic; lobes 3-5, linear 
from a triangular base. Corolla variable in size, campanulate, 
3-5-lobed. Capsule +4 in. long, oblong or obconic, narrowed into 
the peduncle. Seeds ellipsoid, compressed, smooth. — A. ich. 
Fl. Nouv. Zel. 225; A. Cunn. Precur. n. 420; Raoul, Choix, 44; 
Hook. f. Fl. Nov. Zel. i. 159; Handb. N.Z. Fl. 169; Benth. Fl. 
Austral. iv. 187. Campanula gracilis, Forst. Prodr. n. 84. 
KerMADEC Is~LanDs, NorTtTH aND SourH IsLaANnDs, CHATHAM ISLANDS: 
Common throughout, ascending to 4000 ft. November—February. Also in 
Australia and Tasmania, eastern Asia, and southern Africa. 
Several varieties have been named, but they run so much into one another 
that it is hardly possible to satisfactorily define them. 
2. W. saxicola, A. D.C. Monog. Camp. 144.—A small perfectly 
glabrous perennial herb 2-12in. high, either simple or with a 
branched rootstock putting up few or many short erect stems, 
usually leafy at the base only. Leaves rosulate or crowded on 
the short stems, 4-14 in. long, from narrow-obovate to oblanceolate 
or almost linear, obtuse or acute, narrowed into a short petiole, 
