Rutaceae. 



H. Mann described Hbd. 's variety y, doubtfully in the genus Connarus as C. ? 

 Kauaiensis, and remarks that the two lower lateral leaflets, which are very small 

 and have strongly revolute margins, are perhaps a diseased state. This is, how- 

 ever, not the case, as in all forms examined from Kauai and Hawaii these stipel- 

 liform leaflets are present. 



Hillebrand describes a variety /? with generally 3-foliolate leaves and acute an- 

 thers which are longer than their filaments, from the Island of Hawaii, from the 

 western, dry section of Kawaihaeiuka. The writer did not meet with this va- 

 riety, though he found another form in the neighboring district of North Kona 

 on the lava fields of Puuwaawaa, which proved to be new and is here described 

 as follows : 



Var. tomentosum Rock var. nov. 



Leaves 5 to 7 foliolate, including the reduced pair of stipelliform leaflets, on petioles 

 of 2.5 to 4 cm, densely tomentose throughout, as is the inflorescence; leaflets oblong to 

 linear-oblong, or orbiculate, or obovate-oblong, rounded at the apex and base, or bluntly 

 acute, or with even emarginate apex, 5.5 to 15 cm long, 3 to 8 cm wide, pubescent above, 

 densely velvety tomentose underneath, the terminal petiolule 1 to 3 cm, articulate, the 

 lateral ones 1 to 5 cm, densely tomentose, the stipelliform leaflets immediately below 

 the last pair of normal leaflets, the margins revolute, or completely folded, opaque, with- 

 out oil glands; veins and midrib prominent underneath; panicles 4 to 15 cm long including 

 a peduncle of 5 mm to 7 cm; male flowers: sepals 4, rounded or acute, 2 mm high, hispid, 

 petals 2. tomentose, broadly ovate, acute, stamens 4, oblong, 1.5 mm long, four times as 

 long as filament; female flowers: stamens wanting, ovary ovoid, slightly raised on a disc, 

 tomentose; stigma sessile, with two flat broad lobes; follicles woody, 2.5 cm long, 2 cm 

 wide, tapering into a point of 3 to 5 mm, rugose and pitted; seed ovoid, black, 16 mm long, 

 12 mm wide, shining, raphe extending its entire length. 



This very interesting tree occurs on the lava flows of Mt. Hualalai, at Puu- 

 waawaa, North Kona, Hawaii, w r here it is, however, not common. It was first 

 collected by the writer, fruiting and flowering, on June 17, 1909 (no. 3695), and 

 again during March, 1912, when several forms of this variety were found, which 

 have been here described collectively. Type is 10207 in College of Hawaii Her- 

 barium. 



Var. geminicarpum Rock var. nov. 

 (Plates 81, 82, 83.) 



Leaves one to three foliolate with the ever present stipellifoim leaflets, on short 

 petioles, leaflets entirely glabrous, thick coriaceous, with midrib and nerves prominent, 

 united by a reticulate venation, ovate-oblong, or elliptical-oblong, acute or rounded at 

 the apex, the terminal leaflet gradually tapering into a non-articulate petiolule of 1 to 3.5 

 cm, the lateral ones subsessile or on peduncles of often more than 5 cm; female flowers: 

 sepals 4, ovate, acute or rounded petals 2 to 4 reddish yellow, lanceolate, 10 mm, thick, 

 acute, when 2; terete tapering styles distinct, united at the apex by the reddish, close 

 grooved stigma; ovary 2, rarely 3-celled; follicles usually two,* with an ovoid, black 

 smooth seed in each, occasionally with a single seed, the other rudimentary. 



A large tree 40 feet high with a straight trunk, 2,y 2 feet in diameter, bark gray, 

 covered with lenticels. This interesting variety the writer discovered on the 



* In the writer's material each fruit consists of two follicles, though the figure on 

 plate 81 shows only a single one. 



14 



