l - CNCFlora

722 Annals of the
Missouri Botanical Garden
longa, (0.8)1.5-3(4) cm diam; petiolus (4)6-20124.5) cm vex, slightly paler to concolorous above, thicker
longus, vaginatus 2/5 longitudinis vel fere omnino; lamina
than broad and narrowly rounded to almost roundoblongo-elliptica
vel oblongo-ovato, (13)19-30(33.5) cm
longa, (4.5)7-16(21.3) cm lata, nervis primariis laterali3ous raised, matte, paler than surface to almost conco-
8-12 utroque; imSorescentia 1-4 in quoque axilla; pedun- lorous below, drying brown with ridges, darker than
culus 4.5-9 cm longus; spatha 12-19 cm longa; spadix surface below; primary lateral veins 8 to 12 per
12-15 cm longus; pistilla 20-37.
side, arising at an acute angle, then spreading at
mostly (40°)45°-70° angle (rarely to 30°, sometimes
Medium-sized herb, 40-100 cm tall, stem creepto
80° toward base, rarely to 110° at base), freing
over surface of ground at base, then erect; sap
quently forming collective veins that merge with the
milky, unscented; internodes initially weakly glossy,
margin higher up on the blade, narrowly sunken to
often faintly dark green and medium yellowish
weakly quilted-sunken above, thicker than broad to
green-marbled at lower nodes, becoming glossier in
convex and weakly pleated-raised, darker than surage,
1.5-5.5 cm long, (0.8)1.5-3(4) cm diam., meface
to almost concolorous below, usually drying
dium to dark green or olive-green or black-green,
darker than surface; minor veins few, obscure
drying dark yellow-brown to orange-brown, rarely
above, obscurely visible and darker than surface to
dark brown, epidermis sometimes fissured in a
moderately distinct below. INFLORESCENCES 1
cracked network so as to appear corky in some arto
4 per axil; bracts 9-20 cm long; peduncle 4.5-9
eas. LEAVES scattered along stem, denser near
cm long, 6-7 mm diam., medium green, white at
apex; petioles (4)S20(24.5) cm long (averaging base; .s/)athe 12-19 cm long at anthesis, 1-2 cm
12.2 cm long), firm to spongy, slightly paler or dark- longel than the spadix, medium green throughout,
er than stem, medium green to dark green, matte sometimes faintly dark green-lineate on faded areas
to weakly glossy, faintly striate toward the base, outsi(le, slightly paler and glossy inside; spathe
drying greenish to grayish yellow to brown, sheath- tube 2-3 cm diam. when closecl, 5.5-7.5 cm wide
ing for 2/, to fully throughout (0.4-1 the petiole when [lattened, 1.5-2 cm (liam. at constriction (flatlength
and averaging 0.69); sheath 3-18 cm long, tening 3.5-4 cm wide); spathe bla(3e 2.5-3 em
(averaging 8 ( m), with the sheath margins not dry- dianl.; spadix bluntly pointe(lX weakly protruding
ing markedly different than the remainder of folwal(l at anthesis, 12-1tS (m long; free portion
sheath; sheath apex with the tip free-ending and 5.5-() ( m long (sometimes with a few l)istillate flowinequilaterally
acute to emarginate, sometimes dry- ers itl the basal portion); pistillate portion 5-8.5 cm
ing acute; unsheathed portion C-shaped and sharp- long. 1 0 mm diam. throughout; fert i le staminate
ly sulcate to narrowly and sharply sulcate to sub- portiotl 4.5-6.8 cm long, 7-8 mm diam. midway,
terete and weakly sulcate or obtusely and narrowly sometimes bluntly pointed (frequently with the
sulcate in cross section; blades oblong-elliptic to witheled portion weakly protruding out of the front
oblong-ovate, rarely narrowly ovate, (13)19- of the spathe after anthesis); sterile intermediate
30(33.5) x (4.5)7-16(21.3) cm (averaging 25 x 11 seglllent to ca. 5 mm diam., but usua]ly absent with
em), 1.5-4.2 times longer than wide, as long as or the )istillate and staminate portions alrnost conti;up
to 4.8 times longer than petiole (averaging 2.3 uous; pistils 20 to 37, well-spaced, sometimes agtimes
longer than petiole), inequilateral, one side gregated into weak rows, frequent Iy irregularly
0.5-1.5 cm wider than the other side, sometimes gapy)ed, 2 or 3(6) dispersed across s^)adix width,
falcate, subcoriaceous to weakly coriaceous, mod- widely spaced at base and at apex, )ale yellowerately
bicolorous, acuminate to gradually acumi- green, 2.4 mm diam., 1.4 mm high; stigma 1.8-2.2
nate at apex inequilateral, sometimes inequilater- mm diam.; staminodia very thickene(l and mostly
ally rounded to subcordate, rarely acute at base; joined at base, tapered gradually toward apex and
margins moderately straight on one side, frequently not markedly thickened, sometimes broadened latmarkedly
undulate on other side; upper surface se- erally and apparently consisting of a union of 2
miglossy, dark green, frequently white, pale green staminodia, sometimes with 2 pistils contiguous
or yellowish green-spotted or white-streaked, dry- and apparently sharing staminodia; synandria 1.2ing
dark brown to olive-brown or gray-green; lower 1.4 mm diam., ca. 4 per spiral, irregularly rounded
surface paler, matte to weakly glossy, drying yellow- to 4- to 6-sided, drying widely spaced, the margins
brown; sinus less than 1 cm deep, rarely to 2.5 cm of apex markedly turned upward. INFRUCTESdeep;
rnidrib flat-raised, 3-5 mm wide, sometimes CENCE to 23 em long; spathe orange outside; spasulcate
toward base, usually in moderately deep dinc 9-10.5 cm long, 2.S em wide; berries red to
valleys, usually concolorous, sometimes paler than reddish orange or orange-red, drying pale orangesurface
aboveX sometimes weakly 3- to a-grooved brown, ellipsoid, 2- to 3-lobed, 7-8 mm long, S
on upper surface, drying flat-raised to broadly con- 10 mm diam.; seeds 1 to 2 per berryS drying dark