solitaril, aromatico-fragrantes, mucilaginosi, alabastris 16 
mm. longis, 7-8 mm. latis. Sepala quinque, imbricata, 
concava; duo exteriora subcoriacea sed marginem versus 
membranacea, rotundata, margine irregulariter lacerata, 
apice profunde retusa, supra minute pulverulento-strio- 
lata (non strigillosa), 7 mm. longa, 7 mm. lata, basi cum 
plusminusve quindecim glandulis minutis digitaliformi- 
bus, usque ad 1 mm. longis, 0.25 mm. in diametro; in- 
teriora majora, membranacea vel apicem versus aliquid 
papyracea, oblonga, apice profundissime fissa, margine 
integra (vel sepalo extimo minute lacerato), 18 mm. longa, 
7 mm. lata. Petala quinque, alba, membranacea, leviter 
inaequalia, oblongo-spathulata, apice saepe obliqua (ala- 
bastrum aliquid subcuculliforme), margine integra, 17 
mm. longa, 7 mm. lata. Stamina sexaginta quattuor, 
brunneo-flava, subaequalia, usque ad 12 mm. longa. An- 
therae 10 mm. longae, 0.8 mm. latae, longitudinaliter 
rugulosae, filamentis 2 mm. longis, basi 0.6 mm. latis. 
Ovarium crassum, nigrum, inverse claviforme, apicem 
versus in stylum indeterminatum, apparenter erectum, 
luteum, paulatim angustans, 183 mm. longum, 2.5 mm. 
in diametro, quinque cum stigmatibus sessilibus. Capsu- 
lae immaturae solum visae, usque ad 2 cm. longae, 2.5— 
3 cm. latae, praecipue apicem versus anguste subfalcatae. 
Rhytidanthera, closely allied to Godoya, is the only 
compound-leaved genus of the Ochnaceae. Hitherto, 
there have been but three species known: Rhytidanthera 
magnifica, R. splendida and R. suleata. The genus is en- 
demic to Colombia. 
Rhytidanthera mellifera represents the first collection 
of the genus from the Amazon Valley, the other species 
being Andean in their distribution. This is an excellent 
example of the curious type of plant distribution and 
relationship of the plants on the are which forms the so- 
called Venezuelan-Guianan land-mass. Of this distribu- 
[ B34 | 
