316 XXXV. AEALIACEAE. [Panax. 



umbellate, racemose or paniculate flowers on jointed pedicels and simple pin- 

 nate, digitate, or decompound leaves. 



The genus differs from Stilbocarpa in the absence of the cavity in the axis of the fruit. It 

 comprises about 40 species, distributed through the temperate regions ; most plentiful in the 

 Northern Hemisphere. Name of uncertain origin. 



1. A. Lyallii, T. Kirk in Trans. N.Z.I, xvii. (1884) 293, t. 17. A stout 

 herb, 1ft.— .3ft. high. Stems fin.— lin. in diameter, horizontal, emitting strong 

 arcuate stolons. Leaves radical, crowded, more or less clothed with rather soft 

 bristles beneath, usually glabrous and shining above, orbicular-reniform, lobed, 

 deeply toothed, slightly coriaceous ; petioles terete, fistulose, with thin walls, 

 pilose or pubescent. Umbels 3in.— 12in. in diameter. Flowers unisexual or 

 polygamous, purplish-red. Calyx-teeth 0. Petals 4, linear, acute. Male : 

 stamens 5. Female : ovary 2-celled. Stylopodia 2, forming a fleshy indented 

 disk ; styles free. Fruit spherical, 2-celled, black, fehining ; cells 1-seeded. — 

 Stilbocarpa Lyallii, J. B. Armst. in Trans. N.Z.I, xiii. (1880) 386. 



Var. robusta. More robust thaij the typical form, less pubescent, never pilose. Stolons 0. 

 Teeth of leases more strongly mucronate. Petioles stouter, plano-convex, solid or nearly so. 

 Flowers smaller. Petals shorter, yellowish. 



SOUTH Island: Coal Island, Preservation Inlet. STEWART Island : Herekopere and adja- 

 cent islands, Euapuke, Green and Centre Islands, Poveaux Strait. Var. roh%ista. The SNARES, 

 T. E. Punui. Dec. to Feb. 



In " Index Kewensis " it is doubtfully suggested that this plant might be referred to Pseudo- 

 panax ; and Baron von Mueller thought that it might be referred to Panax, notwithstanding its 

 imbricate aestivation ; but it seems more correctly placed under Aralia. 



3. PANAX, Linn. 



Calyx-limb forming a raised border ; teeth or inconspicuous. Petals 5, 

 valvate. Stamens 5. Disk broad. Ovary 2— 4-celled ; styles connate at the 

 base ; tips free or recurved. Fruit coriaceous or fleshy, 2— 5-celled, 1-seeded. 

 Evergreen shrubs or trees, usually glabrous, with simple digitate or pinnate 

 leaves. Flowers unisexual or polygamous, umbellate, racemose or paniculate. 



Species, about 45, widely distributed in tropical and temperate countries. Much uncertainty 

 still exists as to the limitations of many specie.-). All the New Zealand forms are endemic, and 

 several exhibit polymorphism in the foliage to a remarkable extent. 



Ettm. Prom the Greek, signifying everything and a remedy, in reference to the alleged virtues 

 of the ginseng, which was formerly referred to this genus. 



' Leaves always simple. 

 Leaves in young plants linear, 6in. long ; in old plants lanceolate, 2in.-3in. long 1. P. lineare. 



** Leaves in old plants 1-foliolate ; in young plants usually 3-5-foliolate. 

 Leaflets lanceolate, serrate. Stipules 0. Styles 2 . . . . . . . . 2. P. simplex. 



Leaflets oblong, entire. Stipules 0. Styles 3 or 4 . . . . . . . . 3. P. Edgerleyi. 



Leaflets small, rounded. Umbels small. Stipules minute. Styles 2 .. ..4. P. anomalum. 



'** Leaves in old plants 3-5- or 7-foliolate. 

 a. Petiole with a 2-lobed sheathing stipule. Umbels twice compound. 

 Leaves 3-5-foliolate ; leaflets sessile, usually acute . . . . . . 5. P. Colensoi. 



Leaves 3-7-foliolate ; leaflets petiolate, usually obtuse . . . . 6. P. arboreum. 



b. Potiole slender, not sheathing. 

 Leaves 3-5-foliolat6. Fruit urceolate. Styles 3-5 . . . . . . . . 7. P. discolorum. 



Leaves 3-7-£oliolate. Fruit compressed. Styles 2 . . . . . . . . 8. P. Sinclairii. 



