CoLEXSo. — On ncic Phcsnogamic Plants. 95- 



Oeder LI.— CONVOLVULACE^. 

 Genus 1. Convolvulus, Linu. 



1. C. (Calystegia) truncatella, sp. nov. 



Perennial, very lai'ge, diffuse, spreading, largely branched, 

 twining and climbing over bushes and shrubs (almost smother- 

 ing them), and up trees 8ft.-10ft. or more. Leaves membra- 

 naceous, distant, undulate, sub-orbicular-cordate, l|-in.-l^in. 

 diameter, dark-green, 5- (7-9-) nerved ; nerves (and veins) 

 reddish, sub-translucent ; basal lobes large, wide, rounded ; 

 sinus very broad and deep and truncate at base (2 lines wide 

 at top of petiole) ; tips obtuse and retuse, with a small abrupt 

 mucro; margins sub-sinuate, much slightly angularly-toothed; 

 largely veined, veins anastomosing; petioles lin.-2in. long, 

 semi-terete, channelled above, spotted light-purple and green, 

 minutely pilose. Flowers scattered, solitary, axillary ; pe- 

 duncles 4in.-5in. long, 4-angled, spotted like petioles, glabrous; 

 bracts large, generally 3, sometimes alternate, orbicular-cor- 

 date, tip retuse, mucronulate, largely veined, veins anasto- 

 mosing, margin red, sinuate and sub-angulate ; the outer 

 pair 4-5 lines diameter, longer than calyx and distant from it, 

 the inner one close to calyx. Calyx-lobes 4-5, broadly elliptic, 

 mucronate, closely longitudinally veined. Corolla pure-white, 

 broadly campanulate, spreading, l^in. long, Ifin. diameter, 

 much veined longitudinally ; lobes broad and angular, tips 

 obtuse, margins slightly and irregularly sub-denticulate. 

 Stamens slender, very sparingly muriculate at base. Anthers 

 large, oblong-ovate, tip very obtuse, base auriculate. Style 

 exserted much longer than anthers. Stigmas large, broadly 

 oblong-clavate or sub-reniform, dimidiate, gibbous, pedicelled, 

 diverging. Capsule large, glabrous, glossy, dark olive-green, 

 sub-quadrately-rotund, 5 lines long, 4-5 lines diameter, turgid 

 with 4 longitudinal depressions, tip sub-acute with a stout 

 straight beak 1 line long. Seeds 4, large, dark orange-red, 

 smooth, iin. long, sub-reniform-ovoid, 3-sided, flattened and 

 sub-rugulose on two sides, very turgid on the third; testa very 

 hard. 



Hah. Banks of streamlets and edges of woods. Seventh- 

 mile Bush, south of Dannevirke, County of Waipawa • 

 1887-88 : W. C. 



Obs. I. This plant is nearly allied to C. tuguriorum, Forst., 

 but differs from that species in several characters, the more 

 striking being its much larger size and spreading climbing 

 habit, its differently-shaped leaves with their remarkable 

 truncated bases and broad basal lobes, its double row of large 

 calycine bracts, round-topped sepals, obtuse anthers, large 

 globular capsule, and big red seeds. The leaves on its young 



