LXVIII. CAMPANULACE^. 915 



without stipules. Flowers hermaphrodite or very rarely unisexual, either axillary 

 solitary or clustered or in terminal spikes racemes or leafy panicles. Corolla 

 frequently blue or white, more rarely purple or red, very rarely yellow. 



A considerable Order, most abundant in tbe temperate regions of the northern hemisphere 

 and in S. Africa, but extending also over tbe tropics both in the New and the Old World. 



Tribe I. XiOheliem.— Corolla usually irregular. Anthers united round the style. Ovary 

 2-celled. 

 Corolla-tube silt open to the base, the limb very irregular, 2-lipped. 

 Capsule opening between the oalyx-lobes in 2 loculicidal valves ... 1. Lobelia. 

 Fruit, often succulent, either indehiscent or bursting irregularly below 



tbe calyx-lobes 2. Praiia. 



Corolla-tube entire or very shortly slit, the limb spreading, nearly regular 

 or oblique . . 3. Isotoma. 



Tribe II. Campanuleae.— CoroUa regular. Anthers free or imperfectly connate. 

 Corolla regular, campanulate. Anthers free. Ovary 3 to 5-celled ... 4. Wahlenbergia. 



1. LOBELIA, Linn. 



(After Mathias L'Obel.) 

 (Bapuntium and Grammatotheoa, Presl ; Holostigma, Don. ) 

 Calyx-tube hemispherical, turbinate ovoid oblong or rarely linear, limb of 

 5 lobes, open or reduplicate-valvate in the bud. Corolla slit open on the upper 

 side to the base, 5-lobed, the 2 upper lobes usually shorter, more deeply separated 

 and erect or curved upwards, forming a more or less distinct upper lip, the 3 

 lower spreading in a lower 3-lobed lip. Stamens inserted at the base of the 

 corolla, sometimes very shortly adnate to it, the filaments often united above the 

 middle ; anthers united in an oblique or slightly incurved ring round the style. 

 Ovary 2-celled. Stigma broadly 2-lobed arid often surrounded by a ring of 

 retractile hairs. Capsule opening loculicidally within the calyx-lobes in 2 valves, 

 rarely splitting also longitudinally below the calyx-lobes when old. — Herbs, often 

 acrid with a milky juice, the Australian ones either annual or creeping and 

 rooting at the base. Pedicels 1-flowered, either axillary or terminal or in 

 terminal racemes, sometimes bearing 2 small bractefiles, which are never con- 

 stant in the same species. Flowers in a few species dicEcious by the. abortion or 

 sterility of the anthers in the females, and the imperfection of the undivided 

 stigma and abortion of the ovules in the males. 



The genus is numerous in species and widely spread over the greater part of the globe, but 

 chiefly abundant in North America, South Africa, and Australia. 



Sect. I. KolopogTOn. — All the anthers bearded (tipped with a tuft of short rigid hairs or 

 bristles). Flowers terminal or in terminal racemes. 

 Annuals either erect or the lateral stems shortly decumbent at the base. 

 Flowers in a one-sided terminal raceme. Capsule gibbous. 

 Leaves linear, entire or rarely toothed. Middle lower lobe of the 



corolla narrow. Seeds not winged 1. L gibbosa. 



Lower leaves ovate, out. Eicemes very loose. Seeds small, not 

 winged. 



Middle lower lobe of the corolla narrow 2. /.. dentata. 



Middle lower lobe of tbe corolla broad 3. L. gracilis. 



S em creeping or procumbent at the base ; branches as ending. Leaves 

 all petiolate, cordate. Flowers in a loose terminal leafless raceme. 



Capsule globular . . i. L. Irigonocaulis. 



Stem erect, angular. Leaves sessile . 5. L. Douglasiana. 



Sect. II. Kemipogron. — Tifo lower anthers tipped with tufts of short bristles or with 

 single bristles, or points, three upper ones withotit any. Flowers solitary on axillaiy pedicels., the 

 uppermost rarely forming a leafy raceme. 



Flowers hermaphrodite (anthers, stigma, and ovules, all perfect). 

 Lower leaves cuneate or obovate, rather thick, entire or obscurely 

 toothed. Upper leaves narrow. Pedicels f<hort. Stems ascending. 

 Capsule oblong or linear 6. L. aneeps. 



Pabt III. N 



