344 PEOF. H. M. WAED AND MISS E. DALE ON CEATEROSTIGMA PUMILUM. 



prominent beneath, longitudinal and nearly parallel, but converging above and below, 

 and running close together down the petiole, where they are red; smaller veins 

 numerous and reticulate, but sunk and hardly visible in the thick, almost fleshy, lamina. 

 Upper surface of lamina bright green, glabrous, and minutely punctate ; lower paler 

 green, finely pilose, streaked with red at the base. 



Plowers complete, hermaphrodite, zygomorphic, and solitary, each on an axillary 

 scape ; peduncle about 1^ to 2 inches long, leafless, cylindrical, stifi", and erect. 



Calyx regular, tubular- campanulate, erect and persistent, about J inch long, 5-toothed 

 and slightly 5-ribbed, shortly pilose ; the teeth obtuse ciliate. Not winged or appreciably 

 plicate. (Fig. 12, PI. XXXIV.) 



Corolla gamopetalous, hypogynous, bilabiate. Tube erect, blue, half as long again as 

 the calyx; limb obliquely horizontal, and consisting of a large, patent, flat, equally 

 three-lobed lower lip, white with blue patches and veins, and a much smaller oblong 

 upper lip, scarcely notched at the tip. Estivation imbricate, the upper lip external, 

 the right-hand lobe of the lower lip internal and overlapped by the median and left-hand 

 lobes; tube not folded. (Figs. 4-7.) 



Stamens 4, didynamous, and with no trace of a fifth ; inserted at the throat. The 

 anterior pair longer, their free, white, straight, slender filaments converging forward 

 and upward, and each springing at an acute angle from a yellow, prominent, cushion- 

 like, basal insertion running obliquely across the base of the lower lip and nearly 

 meeting its fellow (figs. 8 & 9) ; each stamen thus bears a curious resemblance to the 

 leg of an insect. The posterior pair just within the tube, with much shorter filaments 

 inserted directly into the base of the upper lip and converging forwards. Anthers of each 

 pair somewhat connivent, two-lobed and two-celled, and dehiscing by longitudinal slits. 

 Pollen simple. 



Ovary superior, of two antero-posterior carpels, two-celled, the posterior chamber the 

 larger ; ovoid and completely enclosed in the tube ; terminating in a long, thin, exserted 

 style, expanding above to a two-lipped stigma, irritable to contact. (Pigs. 6 & 7.j 

 Placentation axile. Ovules small, numerous, anatropous. (Pig. 10.) 



Pruit a capsule, cylindric-ovoid, twice the length of the calyx, which it distends and 

 partially splits. Dehiscence septicidal and septifragal, by two vertical valves. (Pig. 12.) 

 Seeds small, numerous, brown, pitted. Embryo straight, or nearly so, in the axis 

 of a cartilaginous endosperm stored with aleurone. (Pigs. 13 & 14.) 



The germination is epigeal, the slender hypoeotyl carrying the two small oval 

 cotyledons some millimetres above the soil. The first pair of leaves are minute and 

 opposite, and bear numerous hyaline hairs. The red colour appears in the primary roots 

 when only 10-15 mm. long. 



The habit and inflorescence of the plant have striking superficial resemblances to those 

 of a Fmguicula ; the venation is somewhat like that of a Flantago, while the corolla 

 reminds one of some Lobelias, and the two-lipped stigma of that of a 3Iimulus. 



Analysis of the above characters clearly places this plant in Scrophulariace^e, and in 

 the tribe Gratiolese of the Antirrhinoidese. This tribe contains a good many genera and 

 numerous species of tropical and sub-tropical plants ; and among these is the smaU genus 



