l - CNCFlora
l - CNCFlora
l - CNCFlora
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744 Annals of the<br />
Missouri Botanical Garden<br />
moderately glossy. LEAVES rosulate, erect-spread- this species to be certain of its flowering and fruiting<br />
to spreading; petioles (6)10-14 cm long (aver- ing phenology. However, flowering collections have<br />
aging 10.6 cm long), moderately erect, dark green been made in January, March, July, and September,<br />
(white at base), sheathed throughout, the margins and fruiting collections during September and Noflaring<br />
to recurled, sometimes incurled, markedly vember.<br />
crisped-undulate nearly throughout; blades ovate to Discussion. The species is recognized by its<br />
elliptic, (26)45-75 cm long, (13.5)17-40 cm wide fully sheathed petioles that are usually flaring to<br />
(averaging 4.5.9 x 24.4 cm), 1-2.4 times longer recurled, by the moderately coriaceous, somewhat<br />
than wide (averaging 1.6 times longer than wide), velvety, weakly quilted blades, and usually broadly<br />
markedly ine(3uilateral (one side 2.5-5 cm wider convex midribs. It has up to three large infloresthan<br />
the otlle) ol)tuse to rounded at apex (the tip cences (mostly more than 30 cm long) per axil.<br />
inequilatelul all(l weakly acute to acuminate), acute The species may be most closely related to D.<br />
to roun(le(l at l)ase, moderately coriaceous, mod- standleyi, which ranges from Nicaragua to Honduerately<br />
l)icololous, dark green, matte and somewhat ras along the Atlantic slope. Both share petioles<br />
velvety to glistellirlgly velvety above, weakly quilt- mostly fully sheathed, and have the sheath margins<br />
ed and minlltely wrinkled on upper surface, much rolled outwatd, but D. pananiensis differs in having<br />
paler to mo(lel ately paler and slightly glossy to blades more coriaceous, matte, and somewhat velmatte<br />
below (llying dark blackish brown to dark vety to glisteningly velvety above, weakly quilted<br />
yellowish l)own above, yellowish brown to grayish and minutely wrinkled on the u)per surface.<br />
brown below; midrib broadly convex or sometimes Though tlle species does not o(cur in the same<br />
flattene(l, 1..5-2 c m wide, slightly paler above, area, it colll(l be confused with O. horichii, a spesomewhat<br />
nlore (onvex and slightly paler below; cies with a similarly fully sheatGle(l petiole, but the<br />
primary lat.(ral 1peins modelately quilted, (7)10 to margins ol which are incurle(l lather than flaring.<br />
20 per side. al ising at an acute angle, then spread- The blades of O. horichii dry nlostly greenish rather<br />
ing at 4tS°-()()° angle, often at a somewhat wider than somewlsat blackened. Die/j(lll)(lchia horichii is<br />
angle Otl ose si(le, obtusely sunken above, convex restricted to the Pacific slope of (4osta Rica, ranging<br />
to obscllrels X aise(l and dal ker below; interprimary from sea le veL to 900 m, whi le D. panamensis is<br />
veins usucllly 1 I)er pair of primary lateral veins, primarily ksown from the Atlalltie slope of Panama<br />
about equal to I)rimaries; minor veins not visible. (also know s [l om the Pacific S lo,oe at higher ele-<br />
INFLORES(411,NCES 3 per axil; peduncles 10-18 vations).<br />
cm long (avetaging 12.5 cm long), somewhat flattened,<br />
me(lium gleen, matte, weakly striate drying,<br />
Paratylv(.s. IANAMA. Cocle: Allo Calvario, 7 km N<br />
of Cope, FolxeZzl et al. 8264 (M0); Alto Calvario, old lumto<br />
6-10 mlll (lianl.; spathe 13-20 cm long (aver- ber trail to Itls Ricas, Lim6n & Sclrl Juan, Croat 68820<br />
aging 18.4 ( m long), medium to pale green, weakly (M0); Alto (>llvario Region, 4.5 mi. 1N of E1 Cope, 2.5 mi.<br />
and finely striate on back surface, with darker, N of Escuelbl 13a1rigon, Croat 675L?6 (M0); 8 km above E1<br />
oblique lines extending out to the margins, inner Cope, Harrll)7(l 778 (M0), Folsom & Collins 6486 (M0).<br />
Darien: Rfo Iuquesa, ca. 2 air kzl flom Cont. Div., vic.<br />
surface sliglltly paler; spadix 12-18 cm long; free of Kittredge hold mine, Croat 272?()6 (M0). Panama:<br />
part 8.5 crn long; pistillate portion 5-9 x 1.8-2.2 above E1 (2ope, 28 km NW of Penorlome, Read & Watson<br />
cm, narrovve(l slightly toward the apex; sterile sta- 84-75 (US).<br />
minate portion 3-4.2 x 1-1.2 cm; mostly sterile<br />
intermediate see tion 1.2 cm long, with a few scat- 22. Dieff¢nbachia pittieri Engl. 8 I(. I(rause,<br />
tered stamino(lia in the lower half; fertile staminate Pflanze-lr. IV. 23 Dc(Heft 64): 42. 1915.<br />
portion 5-7 c m long, the flowers irregularly 5-sid- TYPE: Panama. Canal Area [Colon1: Gamboaed,<br />
2.5-3 nlrn diam.; pistils 3.5-4 mm diam., ir- Las (3 l uces [currently Madden Forest Reregularly<br />
rounded at apex, closely packed, almost serve], 50-80 m, 2 July 191 1, H. F: Pittier<br />
contiguous; staminodia club-shaped, 4-5 mm long, 3766 (holotype, US!; isotype, B not seen). Figgenerally<br />
extending above the pistils, broadest at ures 22, 29B.<br />
base and apex, the tips 1.5-2 mm diam. Fruits orange.<br />
Herb, to probably less than 1 m tall; internodes<br />
1-1.5 cm long, 1.5-2 cm diam., smooth, drying<br />
Distribution and habitat. Dieffenbachia pana- dark yellow-brown with conspicuous pale petiole<br />
mensis ranges principally along the Atlantic coast scars; petioles 10-11 cm long, fully sheathed, freeof<br />
Panama from 50 to 850 m, on both slopes along ending and weakly auriculate on both sides at apex;<br />
the Continental Divide east of the Canal Area. blades obliquely oblong, 17.8-20.5 cm long, 6-8.0<br />
Phenology. There are not enough collections of cm wide, 2.9-3.1 times longer than wide, 1.8 times