Robinson : Alabastra philippinensia Go 



Type collected at Sax Rixcr, rroviiicc of Zaniboaiiya, Min- 

 danao, by R. S. Williams, no. 2^2j, in fruit, February 28, 1905. 



This is closely allied to P. polyccplialus Lam., and may be the 

 species whose introduction into cultivation under that name is 

 recorded by Nicholson * and by Warburg. f 



SANTALACEAE 



Thesium psilotoides Hance. Jour. Bot. 6 : 48. 1868 



Originally described from China, but apparently well represented 



by Williauis ijw, Baguio, Province of Benguet, northern Luzon ; 



in flower, October 9, 1904. A genus not previously known in 



the Philippines. 



NYCTAGINACEAE 



Pisonia LONGiROSTRis Teijsm. & Binnend. Tijdschr. Nederl. Ind. 



25: 401. 1863 

 Collected on the island of Jolo, by R. S. Williams, no. 

 31 2§; in flower, July, 1905. Not previously reported from the 

 Philippines. 



RANUNCULACEAE 



Thalictrum philippinense sp. nov. 



Flowers probably perfect ; certainly every young flower seen 

 perfect, older ones on same or different plants lacking stamens and 

 sepals : inflorescence a terminal 2-5- (usually 2- or 3-) flowered ses- 

 sile cyme, simulating a panicle ; pedicels slender, 1-5.5 cm. long ; 

 sepals 5, petaloid, 2.5-3.5 mm. long, 3-nerved, elliptic, cuneate at 

 the base, obtuse at the apex, deciduous : stamens 25— 35, early decid- 

 uous, 7.5 mm. long, the basal half of the filaments very slender, 

 the upper half clavate, the anthers 0.5 mm. long, elliptic ; maxi- 

 mum number of carpels .seen 12, stipitate, at anthesis 5—6 mm. 

 long, of which the stipe forms 2 mm. and the style i mm.: 

 achenes including the stipe also 5-6 mm. long, 3-ribbed on each 

 side, tipped by the persistent .style. 



A glabrous plant, 20 to 30 cm. high, with a rootstock only 

 3-5 mm. in length and somewhat tuberous roots : basal leaves on 

 slender petioles 6-15 cm. long, 2-3-ternate, ultimate leaflets with 

 petiolules 2.5-10 mm. long, the lateral leaflets 8-16 mm. long, 

 orbicular-ovate in outline, rounded or truncate or subcordate at the 

 base, 3-lobed, the lobes also usually notched, rounded or truncate 



*I11. Diet. Card. 3 : 18. 1878. 

 f Das Ptianzenreich 4" : 69. 1900. 



