a moderate amount of atmospheric humidity, 
it will thrive in full sun. Furthermore, it will 
cheerfully withstand several degrees below 
32°F. It is arborescent in that it grows erect 
on its own trunk, with no running trunk sec- 
tions between the nodes, and has scars where 
the leaves have fallen. In other words, it 
grows compactly, forming a spherical crown 
of leaves that is supported by leaf-stems 
closely adjoining each other on the trunk. 
Such a growth habit, sometimes called ‘’seltf- 
heading,’ is characteristic of this great group 
of arborescent philodendrons from semi-trop- 
ical areas of South America. 
582. PHILODENDRON ‘’SAO PAULO.” This 
name is a preliminary reference, pending ulti- 
mate identification, of a very beautiful plant. 
Using the presently best known plant of the 
arborescent type, P. selloum, for a standard 
of comparison, P. SAO PAULO is superior 
because it will: 
1) Maintain a uniform, bright green 
Philodendron Seiloum in strong sun without yellowing at 
Growing in Houston, Texas the leaf edges. 
2) Produce large leaves that are elab- 
orately frilled and serrated and that 
expand flatly without cupping. 
3) Withstand as much frost, if not 
more, than P. SELLOUM. 
584. PHILODENDRON X JUNGLE GARDENS. This cross between the well known, de- 
pendable, and standard species, P. SELLOUM, and our P. SAO PAULO combines the 
virtues of both species with the vigor of growth usually found in hybrids. 
586. PHILODENDRON BIPINNATIFIDUM. This fine Brazilian species is a beautiful 
and useful plant. Some of the characteristics that distinguish it from its fellows are: 
1) The leaves are deeply cut with resultant good tolerance to full sun. 
2). The petioles (leaf-stems) are extended strongly upright, holding the leaves high 
and giving the entire plant a spherical silhouette that is characteristic of the species 
and most pleasing. 
3). The leaves have a bronze cast and the underside of the veins is rosy and pink. 
4). The spathes are brown with rosy edges. 
588. PHILODENDRON X BARRYI (P. SELLOUM x P. BIPINNATIFIDUM) In addi- 
tion to the vigor expected of a hybrid, this plant should combine a strong, upright habit 
of growth with a high degree of light and frost tolerance. 
590. PHILODENDRON EICHLERI. The magnificient grandeur of this plant suggests the 
sobriquet, ‘’Granddaddy of all Philodendrons.’’ The great arrow-shaped, sliahtly undu- 
lated leaves will attain 6 feet from upper lobe to tip—the trunk 7 to 8 inches in 
diameter—the spathes 15 inches in height. The edges of the spathes and the interior 
surface are rose; the spadix, white. The straight, strong petioles maintain the great 
leaves in a vertical plane. The plant is tolerant of frost. 
The following three hybrids can be judged by a consideration of the characteristics 
of their respective parents: 
592. PHILODENDRON EICHLERI X BIPINNATIFUM. 
594, PHILODENDRON EICHLERI X SELLOUM. 
596. PHILODENDRON EICHLERI X UNDULATUM. 
598. PHILODENDRON UNDULATUM. This is the smallest of the South Brazilian 
arborescent philodendrons that we have handled. The leaves are arrow-shaped, undulat- 
ed at the margins, and average 2 feet in vertical length. 
600. PHILODENDRON MELLO-BARRETOANUM. One of the rarest of the arborescent 
philodendrons. The leaves are very finely cut and there are short spines on the trunk. 
me DA Se 
