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224 PLANTAE CHINENSES FORRESTIANAE, 
very different from the typical O. Acetosella, e.g. Forrest, No. 2144, 
by its much smaller size in all parts, the relatively longer peduncle 
(much exceeding the leaves), the very few scales at the base of 
the flowering shoot, their bulbous development and curious 
chalky-white colour, the very narrow bifid petals, and the late 
time of flowering. 
GESNERACEAE. 
Roettlera Forrestii, Diels. Sp. nov. 
Folia rosulata ; exteriora petiolata, interiora sessilia, herbacea, 
dense ferrugineo-villosa, anguste ovata vel suboblonga, grosse 
dentata dentibus integris vel iterum crenulatis, cum _petiolo 
8-14 cm. longa, 3—4°5 cm. lata, nervi primarii 5—6 subtus promin- 
entes. Scapi complures, 7-20 cm. longi 4—7-flori, ferrugineo- 
villosi vel glanduloso-pilosi. Calyx alte 5—partitus, segmenta 
subovata, pilosa, 5-7 mm. longa, 2°5-3 mm. lata. Corolla lutea ; 
tubus late cylindricus, pilosulus, g-r0o mm. longus, 6-7 mm. 
latus, lobi 3-5 mm. longi, 3-4 mm. lati. Stamina 2 fertilia 5-7 
mm. longa, staminodioidea 5 mm. longa. Discus 1 mm. altus. 
Ovarium 3-4 mm. longum, stylus perbrevis, stigma patelliforme 
I-15 mm. longum. Capsula circ. 2°5 cm. longa, 04 mm. lata. 
“ Plant of 3-9 inches. Flowers canary yellow. On moss- 
covered boulders and branches of trees in very shady situations 
on the eastern flank of the Lichiang Range. Lat. 27° 15’. a 
1o-11,000 ft. July 1906.’ G. Forrest. No. 2510. 
Allied to R. aurea, Franch., but quite different by the sessile 
inner leaves, the longer sepals, and the shorter and broader 
corolla, 
» Didissandra amabilis, Diels. Sp. nov. 
Rhizoma gracile, repens. Caulis solitarius, adscendens vel 
erectus, 15-25 cm. longus, longe nudus, apice folia conferta 
3-4 majora atque nonnulla minuta floresque 2 rarius 3 gignens. 
Folia breviter petiolata vel sessilia ; lamina tenuiter herbacea, 
praecipue supra strigulosa subtus pallidior nonnunquam 
violascens, obovata saepe asymmetrica, basin versus angustata 
ibique integra, ceterum serrata, 7-10 cm. longa, 3-6°5 cm. lata. 
Flores pedunculo bibracteolato 2-4 cm. longo gracili praediti, 
insignes. Sepala pallida parce pilosa, anguste ovata vel lanceo- 
lata, 1'2-1'5 cm. longa, 0:3-0°45 cm. lata. Corolla aurantiaco- 
flava, fusco-maculata ; tubus latus, paulo inflatus, 2°5-2:7 cm. 
longa, 1°7-2°2 cm. lata, labii superi 1-4 cm. longi, lobi 3 circ. 
6-8 mm. longi, 5-7 mm. lati, labii inferi lobi 5-6 mm. longi, 7-8 
mm. lati. Stamina in tubo inclusa, Ovarium ca. 8 mm. longum ; 
stylus 1-1°3 mm. longus. 
