250 
Matay Preninsuta. Mt. Murang: upa tributary of the Klong 
Pak Pla, in the N.W. corner of Lake Ta Lei Sap; about 7° 45’ N. 
and 100° 10’ E., in shady damp spots; “flower pink, process 
yellow”; D. T. Gwynne Vaughan, 264, in Herb. Kew. et Herb. 
i b 
The only species known to me having peltately attached petioles 
and a stiff, suberect, spiniform spur of the lip. 
I. Vaughanii, Hk. f., sp nov.; I. macrosepalae, Hk. f., aftinis, foliis 
ovatis, sepalis obliquis apicibus lateralibus et caleare breve incurvo 
apice clavato bipartito differt. 
Herba ramosa, glaberrima, 4-5 dm. alta, foliosa, floribus majus- 
culis, caule gracile inferne nudo, Folia 8-12 cm. longa, alterna, 
longe petiolata, membranacea, ovata vel elliptica, acuminata, 
integerrima vel obscure crenata, basi rotundata vel late cuneata, 
utrinque 8-10- nervia, petiolo gracile 4-10 em. longo; glandulae 
infrapetiolares 0. Injflorescentia simpliciter pedicellata ; pedicelli 
solitarii, flores subaequantes, basi ebracteati. Flores ad 3 cm. 
diametro, alis vexilloque purpureis, labello flavido. Sepala 2, 
tenuissime membranacea, 1°2-1°5 em. longa, oblique oblonga, uno 
latere cuspidata, limbum totum labelli.tegentia. Vexillum parvum, 
1-1'2 cm. longum, oblongum, costa dorso carinata. Alarum lobi 
basales rotundati, breviter stipitati, 1-1°2 cm. lati, distales in 
limbum amplum rotundatum apice bifidum connati; auriculae dor- 
sales basi connatae. JLabelli limbus cymbiformis, in calcar breve 
incurvum apice clavatum et bilobum attenuatum, ore horizontale 
1°2-1°8 cm. longo acuminato. Filamenta filiformia ; antherae in 
capitulum connatae, obtusae. Ovarium gracile, acuminatum. 
Matay PENINSULA. alor: Biserat, Patani river, on damp 
rocks ; Lat. 6° 32’ N., Long. 101° 12’ E.; “lower two perianth 
segments greenish-yellow—tubular process cream-yellow—other 
segments deep violet to purple”; D. 7. Gwynne Vaughan, 535, in 
erb. Kew. et Herb. Univ. Cantab. 
I, Vaughanii differs from all other species of Impatiens known to 
me in the large delicately membranous sepals that embrace the 
whole lip so closely as to be recognised and removed with difficulty. 
Each sepal is of an irregular oblong form with the nerves from the 
base arching to the lateral apex. 
EXPLANATION OF PLATE. 
Impatiens peltata. Figs. 1, sepal; 2, standard petal; 3, wing 
petals ; 4, spur petal; 5, two stamens; 6, pistil. All enlarged. 
XXXII—ON SOME POTENTILLAS FROM THE FAR 
EAST. 
H. Takepa. 
_ In this short paper I propose to clear up some misconceptions 
and confusion regarding a few Eastern Asiatic Potentillas. Since 
the publication of Th. Wolf’s elaborate monograph the determina- 
tion of Potentillas has heen very much iueiietah: and I hope few 
