Calystegia. | CONVOLVULACES. 477 
4. C. marginata, #. Br. Prodr. 484.— Rhizome creeping ; 
stems slender, twining, quite glabrous, 2—dft. long. Leaves on 
petioles 1-2in. long; blade 1-3 in.. sagittate, acute or acuminate, 
membranous ; the basal lobes long, acute, diverging, often toothed 
or lobed. Peduncles usually shorter than the petioles, margined ; 
bracts rounded-ovate, longer than the calyx. Sepals subequal, 
broadly ovate, obtuse. Corolla small, $in. diam., white. Ovary 
imperfectly 2-celled. Capsule globose; seeds usually 4.— Hook. f. 
Fil. Nov. Zel. i. 184, t. 48. Convolvulus marginatus, Spreng. Syst. 
1. 608; Hook. f. Handb. N.Z. Fl. 198; Benth. Fl. Austral. iv. 430. 
NortH Isnuanp: Rare and local. Near Kaitaia, R. H. Matthews ! between 
Mongonui and Whangaroa, 7. F. C.; Whangarei and Owai, Colenso ; Maunga- 
tapere, H. Carse! Paparoa, Omaha, and Thames, Kirk ! Sea-level to 500 ft. 
December—March. Also in Eastern Australia. 
3. CONVOLVULUS, Linn. 
Herbs or undershrubs, erect or prostrate or climbing. Leaves 
entire or toothed or lobed. Peduncies axillary, 1- or many-flowered ; 
bracts usually narrow or small. Sepals subequal or the inner 
narrower. Corolla campanulate; limb plaited, 5-angled or ob- 
scurely 5-lobed. Stamens included; filaments filiform, dilated at 
the base; anthersoblong. Ovary 2-celled, 4-ovuled ; style filiform ; 
stigmas 2, distinct, oblong or linear. Capsule globose, 2-celled, 
4-valved or splitting irregularly. Seeds glabrous. 
A large genus of about 160 species, abundant in most subtropical or tem- 
perate countries, Jess plentiful in the tropics. The single New Zealand species 
is also found in Australia. 
1. ©. erubescens, Sims in Bot. Mag. t. 1067. — Perennial ; 
usually more or less silky-pubescent, rarely almost glabrous. Root- 
stock stout, creeping; stems few or many, slender, prostrate and 
trailing, variable in length, 2-12in. long or more. Leaves petio- 
late, very variable in size and shape; the lower ones with a blade 
$+? in. long, oblong-cordate or hastate, obtuse, quite entire or sinu- 
ate; in large specimens gradually passing into much narrower acute 
or acuminate upper ones, with diverging entire or irregularly toothed 
basal auricies; in sinall specimens the narrow cauline leaves are 
often wanting. Peduncles as long as the leaves or nearly so, 
1-flowered, with 2 subulate bracts some distance below the calyx. 
Sepals broadly oblong, obtuse, silky. Corolla variable in size, $2 in. 
diam., white. Capsule +-4in. diam., globose, 2-celled. Seeds 4, 
rough, brownish-black.— Hook. f. Fl. Nov. Zel. i. 185; Handb. 
N.Z. Fl. 198; Benth. Fl. Austral. iv. 429. 
Nort Isranp: Hawke’s Bay—Patangata, H. Tryon! Wellington—Pal- 
liser Bay, Colenso, Buchanan. Sovutu Isuanp: Marlborough—Waihopai River, 
Munro; Kaikoura Mountains, Buchanan! Canterbury—Port Cooper, Lyall; 
