SauroDiatuvi.] cl. aroide^ (brown). 14:^ 



has the intramarginal vein more distant from the margin, and if the neuter organs- 

 are filiform, as described by Scl)ott, it can scarcely be •S'. nuhicum, and upon that 

 ground, and by reason of its different geographical area, 1 venture to separate it. 



3. ARIS^MA, Mart. ; Benth. et Hook. f. Gen. PI. iii. 960. 



Spathe deciduous or decaying in fruit ; tube convolute, sometimes 

 having reflexed margins at the mouth ; limb expanded or hooded. 

 Spadix unisexual or bisexual, free, sessile or stipitate, shorter or longer 

 than the spathe, bearing flowers at the base only or for J- J of its 

 length, and sometimes a few subulate neuter organs above the flowers, 

 ending in a short or long appendix, which is smooth, somewhat echi- 

 nate, or loosely covered with hair-like processes. Flowers unisexual. 

 Perianth none. Male flowers usually scattered, 2-4-androus ; fila- 

 ments connate ; anthers 2-celled, opening by pores or slits, or the cells 

 confluent and opening by one marginal slit. Female flowers densely 

 crowded in a cylindric or conical spike. Ovary ovoid or subglobose^ 

 1-celled ; style short or none ; stigma simple ; ovules 1-10, orthotropous,. 

 erect ; placenta basal, cushion-like. Fruit a berry, obovoid or sub- 

 globose, 1- to few- seeded. Seed subglobose, ovoid, or angular; tasta 

 rather thick, crustaceous ; albumen copious ; embryo axile. — Herbs 

 with a tuberous rootstock. Leaves solitary or 2-4 to a plant, trifoliate, 

 pedate, or with several leaflets in a whorl ; petioles long, sheathing. 

 Peduncle solitary, shorter or longer than the leaves. 



Species about 60, chiefly natives of India, extending into the Malay Archipelago, 

 China, Japan, and North America. 



Leaflets entire . . . . . . . \. A. ruwenzoricum. 



Leaflets sharply serrulate, teeth directed towards the 



apex . . . . . . . . 2. A. schimperianum. 



Leaflets minutely erose denticulate, teeth mostly 



directed outwards 2,. A. enneaphyllum. 



1. A. ruwenzoricum, iV^. E. Br. Peduncle 9 in. long in the 

 specimen seen, glabrous. Spathe-tube 4 in. long, subcylindric ; limb 

 6 in. long, lanceolate, tapering into a long subulate tail, probably 

 curving over the mouth of the tube. Spadix unisexual, male only 

 seen, subsessile, 4 J in. long, shortly exserted ; male flowers loosely 

 scattered, o-4-androus; appendix stout, cylindric, obtuse, slightly 

 thickened at its base, smooth. 



Xrile Xiand. British East Africa : Ruwenzori ; Torn district, at Kivata, in 

 forest, 7000-8000 ft., Scotf-SlUot, 7773 ! 



With the inflorescence are some unattached leaves ; one of them with 5 leaflets 

 pedately arranged, 5i-6| in. long, l^-2i in. broad ; the others with 6-7 distinctly 

 radiating leaflets, 8-9 in. long, 2i-2| in. broad. The leaflets of both leaves are very 

 similar in general appearance, sessile, lanceolate, or elliptic-lanceolate, acuminate to 

 a fine point, and tapering to an acute base, with entire margins. Both leaves may 

 possibly belong to the inflorescence, but more complete material is needed to decide, 

 as I have never seen a species of Arisama, having botli radiating and pedately 

 arranged leaflets ; such a difference has hitherto been considered of sectional value. 



2. A. schimperianum, Schott in Bonpl. 1859, 27. Leaves 2 to 

 a plant; petioles long, sheathing; leaflets 7-12, radiating, sessile,. 



