Convolvulacee.) LORA OF NEW ZEALAND. 185 
Gen. III. CONVOLVULUS, Z, 
Omnia Calystegia, sed calyx ebracteatus, v. bracteolis 2 parvis suffultus. 
The absence of the two large bracts which include the calyx of Calystegia distinguishes the New Zealand Con- 
volvulus, The species of this genus are numerous, and found in all latitudes, except the Arctic and Antarctic ; 
several are found in Australia and Tasmania. (Name from con and volvo, to twine together.) 
1. Convolvulus erubescens, Br. ; prostratus v. volubilis, appresse pubescens, pilosiusculus, foliis ob- 
longis hastatisve, pedunculis solitariis 1—3-floris, calycis foliolis eequalibus ovatis obtusis mucronatisve, cap- 
sula bivalvi, seminibus scabris. Br. Prodr. p. 482. Bot. Mag. t. 1067. DC. Prodr. 
Haz. Northern and Middle Islands. Bay of Islands? Cunningham. Canterbury, Lyall. (Cultivated 
in England.) 
I have very indifferent specimens of this plant from Dr. Lyall, and presume it to be that alluded to in 
Cunningham’s * Prodromus’ as C. arvensis? found at the Bay of Islands. So common an Australian plant is very 
likely to be a native of New Zealand, especially as it is further very probably identical with the most widely diffused 
English, European, and Asiatic C. arvensis, and the same as a South African species that has been published under 
several names. Mr. Brown says of C. erubescens, “Too closely allied to C. altheoides and C. lanuginosus,” both of 
them European species; and neither his description of C. erubescens nor of C. angustissimus (of which he says, 
“ preecedenti affinis, an distincta ?”) includes nearly all the varieties we now know of C. erubescens. This is a point I 
shall discuss in the Tasmanian Flora.—A twining or prostrate, slightly hairy or pubescent plant, with stems 4-10 
inches long. Leaves oblong or hastate, sometimes linear, entire or three-parted, the lobes very variable in 
length and breadth. Peduncles one- to three-flowered, bracteolate. Calyx lobes oblong, blunt or mucronate. 
Corolla generally rose-coloured, 3-1 inch across. 
Gen. IV. DICHONDRA, Forst, 
Calyx 5-partitus. Corolla subrotata; limbo 5-partito, plano. Ovaria 2, 2-sperma. Styli 2, basilares. 
Stigmata capitata, — Utriculi 1-spermi. Br. Prodr. 
A small, silky, procumbent herb, variable in size, abundant in Australia, Tasmania, and various warm coun- 
tries of South America, etc. Stems slender, 3-10 inches long, sometimes tufted, creeping. Leaves solitary ; petioles 
erect; blade kidney-shaped, quite entire, rounded or notched at the point, more or less silky on both sides, 3—1 
inch broad. Peduncles solitary, axillary, about as long as the petioles, without bracts. Flowers small, yellow. 
Calyx five-partite. Corolla nearly rotate, having a short tube and flat five-lobed limb. Ovaries two, each cell with 
two seeds and one style; stigmas capitate. Capsules membranous, indehiscent, one-seeded. (Name from dis, 
double, and yovõpos, a seed.) 
1. Dichondra repens, Forst. Prodr. Br. Prodr. A. Rich. Flora. A. Cunn. Prodr, etc. Smith, Ic. 
Ined. t. 8.  Seripha reniformis, Banks et Sol. MSS. et Ic. 
Has. Throughout the Islands, very abundant, Banks and Solander, etc. (Cultivated in England.) 
Gen. V. CUSCUTA, Z. 
Calyx 4-5-fidus. Corolla globoso-urceolata v. campanulata, marcescens; limbo 5-fido; tubo squamis 
plerumque aucto. Ovarium 2-loculare ; loculis 2-spermis. Capsula 2-locularis, cireumscissa. 
A very remarkable genus of parasitical, climbing, leafless plants, that germinate in the ground, from a slender 
spiral undivided embryo, but whose climbing stems become detached from the root, and derive their nourishment 
from little suckers, that penetrate the bark, and come into contact with the wood of the plants they grow upon, 
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