Philotheca myoporoides explained

Philotheca myoporoides, commonly known as long-leaf wax flower,^[1] is a species of flowering plant in the family Rutaceae and is endemic to south-eastern Australia. It is a shrub with sessile, oblong to egg-shaped, glandular-warty leaves and white to pink flowers arranged singly in leaf axils. Prior to 1998 it was known as Eriostemon myoporoides.

Description

Philotheca myoporoides is a species of shrub that typically grows to a height of . The leaves are sessile, oblong to broadly egg-shaped, glandular-warty, papery to leathery, long and wide with a prominent midrib. The flowers are arranged singly or in groups of up to eight, in leaf axils on a peduncle up to long, each flower on a pedicel long. The sepals are broadly triangular, about long and wide and the petals are white to pink, about long with a prominent keel. Flowering mainly occurs in spring and autumn and the fruit is about long with a beak about long.^{[2] [3]}

Taxonomy

This species was first formally described in 1824 by Swiss botanist Augustin Pyramus de Candolle who gave it the name Eriostemon myoporoides in his book Prodromus Systematis Naturalis Regni Vegetabilis.^{[4] [5]} In 1998 Michael James Bayly changed the name to Philotheca myoporoides in the journal Muelleria.^{[6] [7]}

In the same journal, Bayly described nine subspecies, four of which are accepted by the Australian Plant Census, and in 2001, Andrew Rozefelds described a fifth subspecies:^[8]

• Philotheca myoporoides subsp. acuta (Blakely) Bayly^[9] has oblong-elliptic or egg-shaped leaves long and wide;
• Philotheca myoporoides subsp. brevipedunculata Bayly^[10] has oblong, elliptic or lance-shaped leaves long and wide;
• Philotheca myoporoides subsp. euroensis Bayly^[11] has broad elliptic leaves long and wide;
• Philotheca myoporoides (DC.) Bayly subsp. myoporoides^[12] has oblong-elliptic or lance-shaped leaves long and wide;
• Philotheca myoporoides subsp. petraea Rozefelds^[13] has leaves long and wide.

Distribution and habitat

Subspecies acuta grows on rocky sandstone hills from Lockhart to near Cobar.^{[14] [15]} Subspecies brevipedunculata is found coastal areas to mountain summits between Sassafras and Moruya in south-eastern New South Wales.^{[16] [17] [18]} Subspecies euroensis grows among granite boulders on the Strathbogie Ranges near Euroa in north-eastern Victoria.^{[19] [20]} Subspecies myoporoides grows in forest and heathland, usually near watercourses, mostly along the Great Dividing Range from the northern border of New South Wales to near Healesville in Victoria.^{[21] [22] [23]} Subspecies petraea is only known from rocky areas on Mount Stewart, west of Gelantipy in north-eastern Victoria.^[24]

Ecology

Caterpillars of the orchard butterfly feed on this species.^[25]

Use in horticulture

The species is well adapted to cultivation, and plants are commercially available at nurseries in Australia.^[26] The species prefers a well-drained position in light shade. Established plants tolerate both dry periods and moderate frost. Plants may be propagated from semi-mature cuttings, though some forms are slow to take root.^[27]

Notes and References

1. Web site: Weston . Peter H. . Harden . Gwen J. . Philotheca myoporoides . Royal Botanic Garden Sydney . 6 August 2020.
2. Web site: Walsh . Neville . Stajsic . Val . Eriostemon myoporoides . Royal Botanic Gardens Victoria . 6 August 2020.
3. Web site: Philotheca myoporoides . Australian Biological Resources Study, Department of Agriculture, Water and the Environment . 6 August 2020.
4. Web site: Eriostemon myoporoides. APNI. 6 August 2020.
5. Book: de Candolle . Augustin Pyramus . Prodromus Systematis Naturalis Regni Vegetabilis (Volume 1) . 1824 . Sumptibus Sociorum Treuttel et Würtz . Paris . 720 . 6 August 2020.
6. Web site: Philotheca myoporoides. APNI. 6 August 2020.
7. Bayly . Michael J. . Notes on the Eriostemon myoporoides (Rutaceae) species complex, including new names and a new generic placement in Philotheca . Muelleria . 1998 . 11 . 113–126 . 10.5962/p.198412 . 198259008 . 6 August 2020. free .
8. Rozefelds . Andrew C.F. . Notes on the Philotheca myoporoides complex (Rutaceae) in Victoria. . Muelleria . 2001 . 15 . 14–17 . 7 August 2020.
9. Web site: Philotheca myoporoides subsp. acuta. Australian Plant Census. 6 August 2020.
10. Web site: Philotheca myoporoides subsp. brevipedunculata. Australian Plant Census. 6 August 2020.
11. Web site: Philotheca myoporoides subsp. euroensis. Australian Plant Census. 7 August 2020.
12. Web site: Philotheca myoporoides subsp. myoporoides. Australian Plant Census. 6 August 2020.
13. Web site: Philotheca myoporoides subsp. petraeus. Australian Plant Census. 6 August 2020.
14. Book: Wilson . Paul G. . Wilson . Annette J.G. . Flora of Australia (Volume 26) . 2013 . Australian Biological Resources Study . Canberra . 392 . 7 August 2020.
15. Web site: Herscovitch . Clare . Philotheca myoporoides subsp. acuta (Blakely) Bayly . Royal Botanic Garden Sydney . 7 August 2020.
16. Book: Wilson . Paul G. . Wilson . Annette J.G. . Flora of Australia (Volume 26) . 2013 . Australian Biological Resources Study . Canberra . 392 . 7 August 2020.
17. Web site: Walsh . Neville . Philotheca myoporoides subsp. brevipedunculata . Royal Botanic Gardens Victoria . 7 August 2020.
18. Web site: Herscovitch . Clare . Philotheca myoporoides subsp. brevipedunculata Bayly . Royal Botanic Garden Sydney . 7 August 2020.
19. Book: Wilson . Paul G. . Wilson . Annette J.G. . Flora of Australia (Volume 26) . 2013 . Australian Biological Resources Study . Canberra . 393 . 7 August 2020.
20. Web site: Walsh . Neville . Philotheca myoporoides subsp. euroensis . Royal Botanic Gardens Victoria . 7 August 2020.
21. Book: Wilson . Paul G. . Wilson . Annette J.G. . Flora of Australia (Volume 26) . 2013 . Australian Biological Resources Study . Canberra . 391–392 . 7 August 2020.
22. Web site: Bayly . Michael J. . Stajsic . Val . Philotheca myoporoides subsp. myoporoides . Royal Botanic Gardens Victoria . 7 August 2020.
23. Web site: Herscovitch . Clare . Philotheca myoporoides (DC.) Bayly subsp. myoporoides . Royal Botanic Garden Sydney . 7 August 2020.
24. Web site: Walsh . Neville . Stajsic . Val . Philotheca myoporoides subsp. petraea . Royal Botanic Gardens Victoria . 7 August 2020.
25. Book: Wild Plants of Victoria (database). 2009 . Viridans Biological Databases & Department of Sustainability and Environment.
26. Web site: Beeton, Irene. Philotheca myoporoides (synonym Eriostemon myoporoides). Australian National Botanic Gardens. Growing Native Plants. 7 August 2011.
27. Web site: Philotheca myoporoides. Australian Native Plants Society (Australia). 8 April 2023.