There is disclosed a representative plant of Aglaonema designated `39303` which is one displaying variegated foliage consisting of three colors on the upper leaf surface, comprising dark green leaf margins that connect to a lighter grey-colored central area in an irregular pattern that often overlaps to produce small irregular patches of a third distinct foliar color of grey-green; leaf midrib and major lateral veins having showy greyed-yellow tint that highlights the other leaf colors; and a white petiole which accents the leaf coloration.

BACKGROUND OF THE DISCLOSURE 
This invention relates to Aglaonema Plants and, more particularly, to a 
cultivar thereof which is one of a series from a long, detailed program 
for developing such plants. 
This program for the development of Aglaonema has been carried on in the 
vacinity of Apopka, Fla., and the particular seedling of this invention is 
a result of many crosses which is disclosed in an outline set forth below. 
The detailed description of the plant enables the identification of the 
plant without regard to specific botanical statements, since the plant is 
clearly identifiable by reason of its certain peculiar differences as 
distinguished from prior existing Aglaonema. 
I have chosen to designate the instant cultivar by the name `39303`. The 
`39303` plant was a selection from the progeny of `27708`.times.`1501` The 
parent `27708` was a selection from the cross of A. commutatum 
`Tricolor`.times.A. nitidum `Ernesto's Favorite`. The parent `1.501` was a 
selection from the cross of A. commutatum `Tricolor` and A. `Manila`. The 
plant was selected based on its unusual and distinctive expressions of 
foliar coloration and character, particularly its unusual three-color 
variegation on the upper leaf surface with a contrasting white petiole 
accenting such leaf coloration. 
I determined that the plant `39303`, discovered by me from the progeny of 
the above-stated cross, to be of commercial value due to its unusual and 
distinctive appearance. Asexual propagules of the plant `39303` were grown 
and observed for novelty and stability under green house conditions which 
closely approximate those generally used for commercial production at our 
facilities near Apopka, Fla. Measurements and values of the characteristic 
expressions from these specimens were recorded from which the plant can be 
botanically described and botanically distinguished. 
Asexual propagation by stem cuttings and tissue culture was used to 
increase the number of plants for evaluation and has demonstrated the 
stability of the combination of characteristics of the new cultivar from 
generation to generation. These characteristics have been repeatedly 
observed and are determined to be basic characteristics of `39303`, which 
in combination distinguish `39303` from other Aglaonema of the same 
general type such as Aglaonema `Silver Queen` or any of those described in 
the following references: 
Bailey, L. H. and E. Z., 1976, Hortus Third, Macmillan, New York. 
Graf, A. B., 1978. Tropica--Color Cyclopedia of Exotic Plants and Trees. 
Roehrs Co., East Rutherford, N.J. 
The observations, measurements and values describing `39303` may be 
summarized as including the following unique combinations: 
The top surfaces of the leaves are an attractive and distinct variegation 
consisting of three colors; dark green leaf margins connecting to a 
lighter grey-green colored central area in an irregular pattern that often 
overlaps to create small irregular patches of a third distinct foliar 
color that is a darker shade of grey-green. The leaf midrib and major 
lateral veins have a showy greyed-yellow tint that is highlighted by the 
other leaf colors. 
The petiole color is white and accents the leaf coloration, while the stem 
color is green but is generally not visible due to clasping nature of the 
petioles. 
The plant `39303` has a natural good suckering habit which gives the 
finished plant a compact and full appearance.

DETAILED DESCRIPTION 
All color references below are measured against The Royal Horticultural 
Society Colour Chart. Colors are approximate as color depends on 
horticultural practices such as light level and fertilization rate, among 
others. 
Origin: Aglaonema `27708`.times.Aglaonema `1501`. 
Propagation: Asexual reproduction by either tissue culture or stem 
cuttings. 
Classification: Aglaonema.times.`39303`. 
PLANT DESCRIPTION 
Overall size and growth habit: In an 15 cm standard pot, after 
approximately 7 months of growth under appropriate conditions beginning 
with a 16-week-old rooted liner obtained from tissue culture, `39303` will 
have an average plant canopy height of 27-30 cm and a canopy width of 
35-45 cm. In the same time period the average height from the soil surface 
to the junction of the petioles with the most recently unfurled leaf would 
be 16-19 cm. Height from the soil surface to the tips of the uppermost 
leaves held upwards is 42-46 cm. The ultimate size of `39303`, if planted 
in a sufficiently large container and grown under appropriate conditions, 
is unknown. 
Stem: The stem color is varying shades of R.H.S. 146B-C (yellow-green) but 
is generally not visible due to the clasping nature of the petiole wings 
which surround the stem. 
Petiole: The petiole color is R.H.S. 155A (white). 
Leaf: The leaf is lanceolate, with an acuminate apex and an obtuse base 
which will sometimes be slightly oblique. The leaf margin is entire. The 
lamina on either side of the midrib tends to be of slightly unequal 
widths, resulting in a slight curving of the blade towards the narrower 
side. 
Dimensions.--For the growing time and pot size indicated, the largest 
leaves will be approximately 9-10 cm wide and 28-30 cm long. Plant height, 
measured with the leaves held upright, will average 44 cm and plant spread 
from the leaf tips will be approximately 42 cm. 
Midrib.--The midrib color is R.H.S. 160C-D (green-white) and tapers toward 
the apex. It protrudes prominently from the abaxial side of the leaf. 
Primary veins.--The primary veins are sunken into the adaxial side and 
stand out from the abaxial of the leaf blade. 
Color and pattern.--A mature leaf exhibits a central grey-green area 
(R.H.S. 191A-B) that extends out from each side of the midrib to cover 
slightly over half of the total laminar surface. Leaf margins are R.H.S. 
139A (green) and intersect the lighter grey-green (R.H.S. 191A-B) colored 
central area along irregular borders that often overlap to create small 
distinct patches of a third color that is a darker grey-green (R.H.S. 
189A). These distinct phenotypic leaf variegation patterns are due to the 
genotype V.sup.mm V.sup.ef that produces leaves with two variegation 
patterns superimposed on each other. (see Henny, R. J. 1986. Single, 
locus, multiallelic inheritance of foliar variegation in Aglaonema. J. of 
Heredity 77:214-215; and Henny, R. J. 1992. Inheritance of the foliar 
variegation pattern from Aglaonema nitidum (jack) Kunth `Ernesto's 
Favorite`. HortScience 27(3):274.) One pattern (V.sup.mm) originated from 
Aglaonema `Manila` and the other (V.sup.ef) originated from A. `Ernesto's 
Favorite`. The overlapping areas of the patterns produce segments with a 
third color. 
These three leaf colors are highlighted by the greyed-yellow (R.H.S. 
150C-D) leaf midrib. In the basal 2-4 cm of the midrib, the midrib 
coloration extends into the adjacent lamina areas up to 1 cm on each side. 
The coloration is more limited to the midrib as it progresses toward the 
apex. This coloration also extends into the major lateral veins in varying 
lengths but rarely exceeds one half the total length of any one vein. 
Axillary breaks: The plant branches well, producing up to 4-6 or more 
lateral offshoots per main stem. 
Blooming habit: Mature plants have been observed to flower in the spring in 
the greenhouse near Apopka, Fla. 
Roots: Thick white roots with fine laterals.