104 THE TASMANIAN FLORA.. 



D. STEICTA, R. Br. A rigid, erect, usually simple perennial, 1-lf foot tigh, but 

 occasionally decumbent. Stems angular. Leaves oblong to linear, entire or 

 obscurely toothed, sessile, mostly \-l inch long. Flowers in small irregular 

 spikes in the axils, rarely solitary, densely covered on the outer surface with 

 rusty tomentum. Corolla blue or white, usually about ^ inch long. 



Common in the northern and eastern parts of the Island ; also throughout 

 Eastern Australia. Fl. Nov.-Jan. 



6. BRUNONIA. 



Calyx-tube not connate with the ovary, but enclosing it. Corolla nearly 

 regular, the two upper lobes with a deeper division between them than the other. 

 Anthers cohering in a tube round the style. Ovary 1-celled, with a sibgle erect 

 ovule. Fruit dry, indehiscent, enclosed in the persistent calyx-tube. 



A purely Australian genus, consisting of but one species. Authorities are not 

 unanimous with regard to its immediate affinity, and it is often made a separate 

 order. 



B. AuSTRALis, Sm. A tufted perennial. Leaves radical, obovate to spathulate, 

 entire, pointed above, narrowed into a stalk below, from 1-3 inches long. 

 Flowering-stalk slender, often 1 foot high. Flowers numerous, sessile, in a dense 

 globular head, each flower subtended by bracts, the outer bracts appearing as an 

 involucre. Calyx-tube short, the lobes |^-2 lines long, pubescent. Corolla blue. 

 Fruit small. 



Near Launceston, Westbury, and many localities in the northern part of the 

 Island. It occurs almost throughout Australia. Fl. Nov.-Jan, 



Obdee ^hlll.—CAMPANULACE^. 



Floral-tube connate with the wall of the ovary. Sepals usually 5, sometimes 

 3-10. Corolla regular or irregular, the lobes similar in number to the calyx. 

 Stamens of a similar number. Anthers, free or united in a tube round the style'. 

 Ovary partially or entirely inferior, 2 or more celled, with numerous ovules in each. 

 Style simple, the stigma entire or divided into as many lobes as there are cells in 

 the ovary. Fruit capsular or rarely succulent and indehiscent. Seeds numerous, 

 small. 



A very large order, of world-wide distribution, the two natural groups often 

 treated as distinct orders. 



Corolla distinctly irregular, or at 'least more deeply divided between the 

 2 upper lobes. 



Corolla-tuhe slit to the base ... ... ... 1. Lobelia: 



Corolla-tube only partially slit ... ... ... 2. Isotoma. 



Corolla regular, campanulate ... ... ... 3. Wahlenbergia. 



1. LOBELIA. 



Calyx-lobes 5. Corolla-tube slit to the base above, lobes 5, the two upper ones 

 often shorter than the others and curved upwards, the three lower ones forming 

 a spreading lip, or the lobes nearly equal, oblique, and digitately spreading. 

 Stamens free below, the upper portion of the filaments and the anthers united 

 in a tube round the style. Ovary 2-celled. Fruit capsular and opening by two 

 valves above, or succulent and indehiscent. 



The genus is very large and widely spread, and is often divided into two 

 genera from the character of the fruit ; those with a succulent indehiscent fruit 

 being formed into a genus by themselves — Pratia. The division is not generally 



