Hollandaea

Hollandaea is a small genus of plants in the family Proteaceae containing four species of Australian rainforest trees. All four species are endemic to restricted areas of the Wet Tropics of northeast Queensland.

Naming and classification
The genus was formally described in an 1887 publication by German–Australian government botanist Ferdinand von Mueller, who named it in honour of Sir Henry Holland, Secretary of State for the Colonies from 1888 to 1892.

Lawrie Johnson and Barbara G. Briggs noted the unusual fruits and placed genus in its own subtribe Hollandaeinae within the tribe Helicieae in the subfamily Grevilleoideae in their 1975 monograph "On the Proteaceae: the evolution and classification of a southern family". Molecular genetic analysis shows Hollandaea correlates most closely with the genus Helicia and the two are classified in the subtribe Heliciinae within the tribe Roupaleae.

Species

 * Hollandaea diabolica
 * Hollandaea porphyrocarpa
 * Hollandaea riparia
 * Hollandaea sayeriana
 * Synonyms: base name: Helicia sayeriana ; Hollandaea sayeri

Natural distributions
Hollandaea sayeriana is a species of small trees growing naturally only in the region of Mounts Bellenden Ker, Bartle Frere and the eastern Atherton Tableland. They grow naturally as understory trees beneath the canopy of rainforests, from the lowlands to tablelands, up to about 800 m altitude. this species has the official, current, Queensland Government conservation status of "near threatened" species.

Hollandaea riparia is a species of shrubs and small trees named for growing naturally only in riparian and gallery forest as a rheophyte (river streamside plant). Botanists have found it only in a restricted natural range in the Daintree Rainforest region. this species has the official, current, Queensland government conservation status of "vulnerable" species.

The species Hollandaea diabolica and Hollandaea porphyrocarpa were both recognised by botanical science only as recently as the 1990s and formally scientifically described in 2012. Around the early 1990s both were recognised only in a restricted area in the mountains west and north west of Mossman, Queensland. A population of H. diabolica affinity was subsequently found south of Mount Bellenden Ker but collections were only of sterile material and not yet fertile and fruiting material. Both species may only grow naturally in the restricted mountains areas reported and further field work will clarify this.

Cited works


<!-- Clarification of naming history, especially the confusing phrase names of Pinnacle Rock Track vs. Devils Thumb previously used in what appears a mixed way on the two newly named species; gathered together here from APNI, for easy editing reference and copy paste purposes; will later be removed, and part added to talk:

Anon., (1887) The plants of Mt. Bellenden-Ker. The Victorian Naturalist 3.: 170 →https://www.biodiversitylibrary.org/page/30003217 32065
 * Hollandaea Anon. [ nom. inval. ] nom. nud..

Mueller, F.J.H. von, (1887) Notes on Australian Plants. Australasian Chemist and Druggist 2(6).: 173 [tax. nov.] Type: Hollandaea sayeri (F.Muell.) F.Muell.
 * Hollandaea F.Muell.

Mueller, F.J.H. von, (1889) Systematic Census of Australian Plants Suppl. 4.: 4 Bailey, F.M., (1913) Comprehensive Catalogue of Queensland Plants.: 454 Hyland, B.P.M., (1995) Hollandaea. Flora of Australia 16.: 391 APC Dist.: Qld Weston, P.H. & Barker, N.P., (2006) A new suprageneric classification of the Proteaceae, with an annotated checklist of genera. Telopea 11(3).: 335 Weston, P.H. in Kubitzki, K., (Ed) (2007) The Families and Genera of Vascular Plants 9.: 394 Mabberley, D.J., (2008) Mabberley's Plant-Book Edn. 3..: 410 Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 673 Etymology: "Named afer Sir Henry Thurston Holland, first Viscount Knutsford (1825-1914), Secretary of State for the Colonies between 1887 and 1892." 32081

Mueller, F.J.H. von, (Nov. 1886) Descriptions of new Australian plants. The Victorian Naturalist 3(9).: 93 [tax. nov.] →https://www.biodiversitylibrary.org/page/30003121 Type: "On the Russell-River; W. Sayer."
 * Helicia sayeriana F.Muell.

Mueller, F.J.H. von, (1887) Notes on Australian Plants. Australasian Chemist and Druggist 2(6).: 173 basionym of: Hollandaea sayeri F.Muell. Smith, L.S., (1956) Proceedings of the Royal Society of Queensland 67.: 38 basionym of: Hollandaea sayeriana (F.Muell.) L.S.Sm. Foreman, D.B., (1984) A review of the genus Helicia Lour. (Proteaceae) in Australia. Brunonia 6(1).: 71 Hyland, B.P.M., (1995) Hollandaea. Flora of Australia 16.: 393, Fig. 172, Map 442 synonym of: Hollandaea sayeriana (F.Muell.) L.S.Sm. George, A.S., (2010) Australian type material in the Economic Botany Collection, Royal Botanic Gardens, Kew. Muelleria 28(2).: 167 Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 683-686, Map 1 synonym of: Hollandaea sayeriana (F.Muell.) L.S.Sm. 485

F.Muell. used the same specimen(s) for making the new Hollandaea genus (above) and but with the same specimen as Helicia sayeriana so species duplication with this new name, while apparently he didn’t first get rid of the Helicia sayeriana name (ie. "[ nom. illeg. ] nom. superfl.."):

Mueller, F.J.H. von, (1887) Notes on Australian Plants. Australasian Chemist and Druggist 2(6).: 173 [tax. nov.] basionym: Helicia sayeriana F.Muell.
 * Hollandaea sayeri F.Muell. [ nom. illeg. ] nom. superfl..

Mueller, F.J.H. von, (1889) Systematic Census of Australian Plants Suppl. 4.: 4 Bailey, F.M., (1913) Comprehensive Catalogue of Queensland Plants.: 454 Hyland, B.P.M., (1995) Hollandaea. Flora of Australia 16.: 393, Fig. 172, Map 442 synonym of: Hollandaea sayeriana (F.Muell.) L.S.Sm. Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 683-686, Map 1 synonym of: Hollandaea sayeriana (F.Muell.) L.S.Sm. 32109

Then later, recognition that this F.Muell. Hollandaea different genus from Helicia was correct, but his apparent duplication of use of the type specimen(s) for Helicia sayeriana and Hollandaea sayeri means that Hollandaea could be accepted as a new genus, but Hollandaea sayeri not accepted as a new or a name of a type species—instead many years later the new combination Hollandaea sayeriana, using the specific epithet from Helicia sayeriana (does that all make sense, haha; at least it does for me after reading and writing it all out; making sense of it was the purpose of this writing it out)—i’ll have to confirm by reading the following 1956 ref, that apparently did sort that all out:

Smith, L. S., (1956) Proceedings of the Royal Society of Queensland 67.: 38 [comb. nov.] Type: Mt. Bellenden Ker, W. Sayer s.n.. basionym: Helicia sayeriana F.Muell.
 * Hollandaea sayeriana (F.Muell.) L.S.Sm.

Hyland, B.P.M., (1971) A key to the common rainforest trees between Townsville and Cooktown, based on leaf and bark features.: 56, Code 345 Hyland, B.P.M., (1982) A revised card key to rainforest trees of North Queensland.: 57, 123, 142, Code 345 Comment: As Hollandaea sayerana. Robson, Peter J., (1993) Checklist of Australian Trees. Common Name: Sayers Silky Oak Hyland, B.P.M., (1995) Hollandaea. Flora of Australia 16.: 393, Fig. 172, Map 442 √ APC nomenclatural synonym: Hollandaea sayeri F.Muell. nom. illeg. nomenclatural synonym: Helicia sayeriana F.Muell. Common Name: Sayer's Silky Oak APC Dist.: Qld Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 683-686, Map 1 Type: "Queensland. Cook District: Mt Bellenden Ker, s.dat., W.Sayer s.n. (holo: MEL)." nomenclatural synonym: Hollandaea sayeri F.Muell. nom. illeg. nomenclatural synonym: Helicia sayeriana F.Muell. Etymology: "The species is named for W.A. Sayer, a 19th century Australian naturalist, botanical collector and collector of the type specimen." 32124

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Hyland, B.P.M., (1995) Hollandaea. Flora of Australia 16.: 499, 391, Fig. 139, Map 441 √ APC [tax. nov.] Type: Timber reserve 165, Baird Logging Area, QLD, 16 02'S, 145 19"E, 22 Sept. 1980, B.P.M.Hyland 10626. APC Dist.: Qld
 * Hollandaea riparia B.Hyland

Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 681-683, Fig. 3, Map 1 Type: "Queensland. Cook District: Timber Reserve 165, Baird Logging Area, Qld, 22 September 19810, B.Hyland 10626 (holo: CNS; iso: BRI, CANB n.v.)." Etymology: "The specific epithet is derived from the Latin word riparius (the bank of a stream) and alludes to the habitat of this species." 204891

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Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 678-680, Fig. 2, Map 1 [tax. nov.] for the following two taxa published in 2012 but not yet accepted yet by APC see APNI, i’ll check status with Australian Tropical Herbarium, and have read the Austrobaileya journal paper.:

Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 674-678, Fig. 1, Map 1 [tax. nov.] Type: "Queensland. Cook District: Pinnacle Rock Track [Daintree National Park, NW of Mossman], 1 February 1996, B. Hyland 25914RFK (holo: BRI; iso: CNS, NSW)." synonym: Proteaceae sp. 'Devils Thumb' synonym: Hollandaea sp. (Devils Thumb P.I.Forster + PIF10720) synonym: Hollandaea sp. (Devils Thumb) synonym: Orites sp. (Pinnacle Rock Track WWC 867) 307881
 * Hollandaea diabolica A.J.Ford & P.H.Weston

Ford, A.J. & Weston, P.H., (2012) A taxonomic revision of Hollandaea F.Muell. (Proteaceae). Austrobaileya 8(4).: 678-680, Fig. 2, Map 1 [tax. nov.] Type: "Queensland. Cook District: Daintree National Park, Pinnacle Rock Track, NW of Mossman, beyond the Gleichenia area, 13 October 2005, A. Ford 4742, W.Cooper & R.Russell (holo: BRI [2 sheets + spirit]; iso: CNS, K, L, MEL, MO, NSW)." synonym: Hollandaea sp. (Pinnacle Rock Track) synonym: Hollandaea sp. Pinnacle Rock Track (P.I.Forster+ PIF10714) Qld Herbarium 307887
 * Hollandaea porphyrocarpa A.J.Ford & P.H.Weston

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