AU617096B2 - A philodendron cultivar - Google Patents

Description

vi COMMONWEALTH OF AUSTRAf Patents Act 1952 TE COMPLETE SPECIFICATION (Original) FOR OFFICE u 17096 Int. Class Application Number: PH09932 Lodged: 19-01-87 Complete Specification Lodged: Accepted: Published: Priority: Class Related Art: TO BE COMPLETED BY APPLICANT Name of Applicant: ASHLEY CORPORATION PTY. LTD.

I a q ai 6« I a'a a t t a a t ta l Address of Applicant: Lot 1467 Balfour Street, Huntingdale, in the State of Western Australia, Commonwealth of Australia Actual Inventor: Veronica Lesley Winterbourn and Barry Mervyn Winterbourn at *a as 0 0 a t *a 14 i ta a a a 1 et a 6 C Address for Service:- Wray Associates Primary Industry House 239 Adelaide Terrace Perth Western Australia 6000.

Complete Specification for the invention entitled: "A PHILODENDRON CULTIVAR" The following statement is a full description of this invention, including the best method of performing it known to me:- 1 2 The present invention relates to a new and distinct variety of philodendron. The denomination of this new variety is "Philodendron Winterbourn".

The new variety is a hybrid derived from Philodendron Bipinnatifidum and/or Philodendron Selloum.

Among the novel characteristics distinguishing this variety from its parents is that the new variety is a small leaved much more compact plant than most species in subgenus Meconostigma (including Philodendron Selloum) generally having many more leaves than similar aged plants of the subgenus. While the leaves of Philodendron Winterbourn are similar in overall morphology to those of philodendron selloum, they differ markedly in their size.

The leaves of Philodendron Winterbourn are approximately three-quarters the length of those of philodendron selloum, but only one-third the breadth. That is, while the leaves of most members of subgenus Meconostigma are °nearly as broad at the base as they are long, the leaves of Philodendron Winterbourn are only slightly over half as wide at the base as they are long. The veins on the o back of the leaves of philodendron selloum also S* apparently do not turn reddish as they do in older plants I of Philodendron Winterbourn. The spathe of philodendron selloum is green on the outside whereas that of Philodendron Winterbourn is a dull, dark red.

O The accompanying drawings are photographs showing the vegetation and flower of the new variety as depicted in colour as nearly as true as reasonably possible to make the same in a photograph of this character, The following is a detailed description of the new variety:

I

y-Epruu- IX~- 3 a cultivar which results in the following characteristic: Height:- Shrub to about 1 metre tall Stem:- Few-branched, internodes not developed, the sixty or more leaves forming a dense crown, the leaf scars crowded together on the stem.

Leaf size:- About 12 to 20 centimetres across and 22 to 35 centimetres long.

Leaf characteristics:- Leaf blades ovate to narrow-ovate (with the base often truncated) in outline and the tip (terminal lobe) sometimes acuminate, almost flat or V-shaped, especially at the sinus, margins slightly recurved, pinnatifid, with five to eight pairs of lobes, the younger leaves divided half-way to the midrib (and with the fewer lobes) and the older leaves divided to three-quarters of the way to the midrib or more; terminal and side lobes tapering on younger leaves, side lobes nearly parallel sided on older leaves and o slightly curved towards the terminal lobe, terminal lobe poorly separated from adjacent lobes, especially on younger leaves, lobes angled forward at about 50 degrees o from the midrib, obtuse to acute; basal lobes 0: bipinnatifid, the secondary lobes all poorly developed "o (or missing) except the secondary basal lobe away from the sinus (the one towards the sinus is missing), mature leaves dark green, glossy, with light-green midrib and 0° major veins on the adaxial surface and reddish major veins and midrib on the abaxial surface. Major veins sub-opposite to alternate.

a o0 0 e Flower:- The peduncle is a dull olive green, 030 transition to the spathe is oblique and abrupt. The o°0 spathe is c. 12cm long and uniformly c. 3.5cm diameter with a small point at the top. The outside of the spathe is smooth and shiny, it is a dull dark red, suffused 4 4 with green towards the base and somewhat lighter toward the apex. The inside of the spathe is dull, the lower half is pale pink and the upper half is cream-coloured. The spadix has cream coloured flowers over the upper four-fifths of its length and pale yellow female flowers over the lower fifth. Its surface is pink in the lower two-thirds and cream coloured in the upper third.

The key characters of the Philodendron winterbourn that distinguish it from its parent P. selloum may be summarised as follows: -7 *o 9 9 919 P. winterbourn Habit Retains compact habit, never forms elongate stems.

Habit maintained by not developing an internodal length. Internodal length not measurable.

Leaves Foliage cover increases with age, leaves increase from basal stem area.

Leaves glossy deep green to dark green (Methuen Color 26 B6-D8) Leaf pedicel dull dark red (Methuen Color 10 C4 greyish red) Leaves small to 3/4 length of parent (P.selloum) Leaf 1/3 width of mature parent Leaf sinus reaches only half-way to midrib Parent Forms elongate climbing stems to Im.

Internodal length increases with age to several cms between nodes.

Number of leaves low because as plants increase in length, the leaf number decreases.

Leaves dull green to deep green (Methuen Color 26 A8-B6) leaf pedicel (Methuen Color 26,A8) Leaves large Leaf sinus reaches almost to midrib it 9 s MR -r c.

r 5 Sinus simple, leaf Sinus simple, but between sinus not basal leaf lobe secondarily lobed may be secondarily lobed again.

Spathe Dull yellowish-white (Methuen Color 2 A2) This is not significantly different from the parent.

The parent, Philodendron selloum can be readily seen in various botanic publications including 'Exotica' Series 3 7th Edition, page 183. The form of Philodendron winterbourn is seen on the enclosed photograph.

The cultivar is a selection of the widely grown Philodendron selloum (Royal Botanic Gardens, Kew confirmation). Approximately 40,000 plants of the parent were cultivated per year for 5 years and a selection 0*o0 process was undertaken to develop a cultivar with the *e following characteristics: i) Compact habit for pot culture ii) Dark glossy leaves iii) Vigorous growth characteristics while retaining a high resistance to pests and diseases.

A promising form was finally selected for further development. Following growing trials the cultivar was found to be stable and met the selection criteria listed above.

Since that time it has been extensively micropropagated and proved to be completely stable in all the desirable characteristics.

The original material is still available, though the same extensive selection process would be required to repeat the cultivar.

Claims (1)

1. A new and distinct plant variety of genus Philodendron subgenus Meconostigma designated Philodendron Winterbourn substantially as herein described and as shown in the accompanying photographs. DATED this THIRD day of SEPTEMBER 1991. ASHLEY CORPORATION PTY LTD Applicant. Wray Associates J Perth, Western Australia, o Patent Attorneys for the Applicant. 0 o 4 0 0 0 6