l - CNCFlora

696 Annals of the
Missouri Botanical Garden
79191 (holotype, MO-5170498!; isotypes, peduncle (2.5)8-17.5 cm long (averaging 10.5 cm
AAU!, B!, CAS!, COL!, CR!, DUKE!, F!, GH!, long), somewhat compressed dorsiventrally in cross
HUA!, INB!, K!, M!, MEXU!, NY!, PMA!, US!). section, 3-4 mm wide on drying; spathe 11-25.7
Figures 5, 28A.
cm long, 1.5-2.0 cm wide when furled (as long as
or up to 2 times longer than peduncle and aver-
Small, erect herb, 0.6-1.3 m tall, sap milky; in- aging 1.6 times longer), constricted 4.5 cm above
ternodes glossy, 1.5-4(7.5) cm long, 1-4 cm diam., base, the constricted area 1.8-3 cm wide when flatmedium
green to dark green, obscurely marbled tened, medium to pale green outside, somewhat
light to medium green. LEAVES erect-arching, pet- darker on tube except white on open face, uniformioles
7.5-25(35) cm long (averaging 17 cm long), ly paler within, drying dark brown to blackened
terete and obtusely sulcate near apex or subterete throughout; spathe blade 3.3 cm wide when flatto
C-shaped or D-shaped in cross section, flat to tened; spathe tube 4.5-8.5 c m wide when flattened,
shallowly sulcate adaxially (the margins obtuse to paler inside; spadix protruding forward at anthesis,
acute), rounde( or sometimes acute abaxially, mod- 12-14 cm long; free portion 6.5-9.5 cm long; piserately
erec t, semiglossy or almost matte, dark tillate portion tapered towal(l apex, 4.5-9 cm x 5-
green to olive-green, blotched striate or streaked 12 mm, stipe and axis pale green, fertile staminate
white or silver-green, drying green to sometimes portion white, tapered slighlly toward both ends, 8-
light yellow-br(wn, sheathing from lower 2/5 to near- 9 cm long, 7-10 mm diam. midway; sterile stamily
throughout (averaging 0.63 of length); sheath nate portion 2.5-4 cm long; mostly sterile inter-
6.7-13(20) cm long (averaging 9.5 cm), to 1.5 cm mediate segment 5-7 mm diam., mostly bare but
diam., margins erect to involute, the tip asylnmet- with a scattering of staminodia on both ends (esrically
auriculate to rounded and free-ending, with pecially at base); pistils 42 lo 65, closely spaced;
one side obtuse to rounded, with the other side ovary globose, 1-2.5 mm diam., pale green; stigma
acute to obtuse; unsheathed portion 1-13 cm long, pale yellow; staminodia 1-5 mm long, up to 3 times
to 1.5 cm (liall.; blades usually + elliptic, ovate- longer than pistil, somewhal llattened toward base
elliptic, rarely ovate or broadly lanceolatee 16-36 and free at base, tapering and somewhat globular,
cm long (averagirlg 23 cm long), (7.8)10-] 5.5(20.5) 1-2 mm diam. at apex; svllandria with flowers ircm
wide (averaging 12 cm wide),1.5-2.9 times lon- regularly rounded, 0.t