l - CNCFlora

716
Annals of the
Missouri Botanical Garden
Figure 13. Dieffenbachia horichii. AX B. (Croat & Hannon 79115). A. Habit of flowering plant. B. Crown of
plant with cluster of inflorescences. CX DX E. (Croat 79073). C. Plant with inflorescence at anthesis. D. Close-up
of stem with petiole bases. E. Close-up of lamina base and close-up of inflorescence.
riculate (auricle sometimes extending up to 1.5 cm nate at apex, + equilateral and obtuse to rounded
beyond blade); unsheathed portion lacking or to 1.2 (rarely acute or narrowly rounded) at base, margins
cm long (rarely to 6 cm long), obtusely somewhat weakly undulate; upper surface dark green, semiflattened
in cross section; blades narrowly to broad- glossy to highly glossy, drying dark gray-green to
ly elliptic to ovate-elliptic, 26-60 x 9-30 cm (av- dark yellow-brown; lower surface weakly glossy to
eraging 45 x 19 cm), 1.9-3.4 times longer than matte, moderately paler, drying yellow-brown to
wide (averaging 2.5 times longer), 1.7-4 times lon- yellowish green; midrib broadly and shallowly
ger than petiole, slightly inequilateral, one side sunken to flat-sunken above, 5-20 mm diam., con-
0.5-1.2 cm wider than the other side, subcoria- vex and bluntly low-triangular below, drying light
ceous to coriaceous, somewhat bicolorous, acumi- brown to dark brown paler than surface below; pri-