Tetragonia.] XXXIII. FICOIDEAE. 185 



2—8 ; ovules solitary, pendulous. Fruit indehisceut, globose or obconic, often 

 angular or horned ; epicarp fleshy; endocarp bony; testa membranous. Her- 

 baceous or suffruticose, with erect or trailing stems and alternate petiolate 

 rather succulent flat leaves. Embryo curved ; radicle superior. Flowers uni- 

 sexual or hermaphrodite, axillary. 



Species, about 25, chiefly distributed m South Africa, Japan, South America, Pacific islands, 

 and New Zealand. Btym. Prom the Greel?, signifying /otir and an angle, in allusion to the angular 

 calyx-tube. 



Styles 3 or more. Fruit with 4 or more horns . . . . . . 1. T. expansa. 



Styles 2 or rarely 3. Fruit globose, unarmed . . . . . . 2. T. trigyna. 



1. T. expansa, Murr. in Comm. Gotting. vi. (1783) 13. A succulent 

 erect or suberect herb, more or less branched, 1ft. high or more, glabrate or 

 glabrous, more or less papillose. Leaves alternsite, rhomboid-ovate or narrow- 

 rhomboid, lin.— 3iH. long, abruptly nairowed into the petiole, obtuse or acute. 

 Flowers axillary, solitary or geminate, sessile or shortly peduncled. Calyx-tube 

 broadly turbinate ; lobes equalling the tube, obtuse. Stamens 12—16, irregu- 

 larly inserted. Styles 3-8. Ovary half-inferior, 3— 8-celled. Fruit furrowed, 

 angular, usually with 2—4) erect spines or horns ; endocarp woody. — ^A. Rich., 

 Fl. N.Z. 320 ; DC, Prod. iii. 452 ; A. Cunn., Precurs. n. 523 ; Hook, f., Fl. 

 N.Z. i. 77 ; Handbk. 84; Benth., Fl. Austr. iii. 326. T. halimifoUa, G. Forst., 

 Prod. n. 223. 



KERMADEC Islands to STEWART Island: usually littoral. New Zealand spinach. Dec. 

 to Feb. Also in temperate South America, Japan, Australia, Lord Howe Island, and Norfolk Island. 



The spines vary greatly in number and length. In the specimens from Dog Island the calyx 

 is broadly turbinate and obviously 8-ribbed. In Waikato specimens the calyx-tube is proliferous. 



2. T. trigyna, Banks and Sot. ex Hook, f., Fl. N.Z. ii. 329. Stems suf- 



fruticose, 1ft. -8ft. long, subscandent or trailing. Leaves alternate, broadly 



ovate-rhomboid or ovate, obtuse, abruptly narrowed into the petiole, papillose. 



Peduncles axillary, filiform, rarely geminate. Flowers perfect or dioecious. 



Calyx-lobes broad, rounded. Stamens 12-20. Ovary 2- rarely 3-celled ; cells 



1-ovuled. Fruit red, subglobose; epicarp fleshy, at length woody, obscurely 



4-lobed. Seeds 1—3. — Handbk. 84. T. implexicoma, Hook, f . ; var. Chathamica, 



F. Muell., Veg. Chath. Isds. 12. 



KERMADEC Islands to STEWART Island ; CHATHAM Islands : littoral. Ice-plant. Nov. 

 to Jan. 



Distinguished from T. expansa by the broader leaves, dioecious flowers, and red globose 

 unarmed fruits with 2 or 3 seeds. The Australian T. implexicoma. Hook, f., can only be regarded 

 as a variety of T. trigyna, differing in the more acute leaves and longer peduncles. 



Oedee XXXIV.— umbelliferae. 



Calyx-tube adnate with the ovary ; limb truncate or 5-toothed or lobed or 

 obsolete. Petals 5, imbricate or valvate in bud, often with inflexed tips, in- 

 serted round a 2-lobed epigynous disk, the lobes often united with the base of 

 the style, forming the stylopodium. Stamens 5, inserted with the petals; 

 filaments incurved. Ovary inferior, 2-ceIled, or rarely 1 -celled by absorption ; 

 24 



