Cryptandra propinqua explained

Cryptandra propinqua is a species of flowering plant in the family Rhamnaceae and is endemic to south-eastern continental Australia. It is a shrub with many branches, more or less linear leaves, and spike-like clusters of white, tube-shaped flowers.

Description

Cryptandra propinqua is a shrub that typically grows to a height of and has many side branchlets long but that are not spiny. The leaves are linear, flat or round in cross-section, long, wide on a petiole long, and often clustered. There are narrowly triangular stipules long and fused at the base of the petioles. The edges of the leaves are rolled under, sometimes obscuring the lower, densely hairy, white surface, the upper surface glabrous. The flowers are borne singly in upper leaf axils forming a spike-like cluster with about 15 egg-shaped bracts at the base of each flower. The floral tube is white, bell-shaped, long, the lobes erect, long. The petals are white, protrude slightly beyond the end of the floral tube, and are hooded. Flowering mainly occurs from June to September.^{[1] [2] [3]}

Taxonomy and naming

Cryptandra propinqua was first formally described in 1837 by Eduard Fenzl in Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hügel from an unpublished description by Allan Cunningham.^{[4] [5]} The specific epithet (propinqua) means "near" or "related to".^[6]

In 2007, Jürgen Kellermann and Frank Udovicic described two subspecies of C. propinqua in the Proceedings of the Linnean Society of New South Wales, and the names are accepted by the Australian Plant Census:

• Cryptandra propinqua subsp. maranoa Kellermann & Udovicic^[7] has leaves with the lower surface usually visible, mostly glabrous stipules, bracts not covering the sepals and occurs in New South Wales and Queensland.^[8]
• Cryptandra propinqua A.Cunn. ex Fenzl subsp. propinqua^[9] has leaves with the lower surface obscured, stipules hairy, at least on the midrib, and fragile bracts partly covering the sepals and is restricted to the Maranoa and nearby districts of Queensland.

Distribution and habitat

This cryptandra grows in sandy soil over sandstone, and is widespread between Springsure, Inglewood and Morven in Queensland, mainly on the ranges and inland in New South Wales, and in southern South Australia.

Notes and References

1. Bean . Anthony R. . New species of Cryptandra Sm. and Stenanthemum Reissek (Rhamnaceae) from northern Australia. . Austrobaileya . 2004 . 6 . 4 . 926–927 . 1 February 2023.
2. Web site: Harden . Gwen J. . Cryptandra propinqua . Royal Botanic Garden Sydney . 1 February 2023.
3. Web site: Cryptandra propinqua . State Herbarium of South Australia . 1 February 2023.
4. Web site: Cryptandra propinqua . Australian Plant Name Index . 1 February 2023.
5. Book: Fenzl . Edouard . Endlicher . Stefan F.L. . Fenzl . Eduard . Bentham . George . Schott . Heinrich W. . Enumeratio plantarum quas in Novae Hollandiae ora austro-occidentali ad fluvium Cygnorum et in sinu Regis Georgii collegit Carolus Liber Baro de Hüge . 1837 . 23 . 1 February 2023.
6. Book: Sharr . Francis Aubi . George . Alex . Western Australian Plant Names and Their Meanings . 2019 . Four Gables Press . Kardinya, WA . 9780958034180 . 284 . 3rd.
7. Web site: Cryptandra propinqua subsp. maranoa . Australian Plant Census . 1 February 2023.
8. Kellerman . Jürgen . Udovicic . Frank . A revision of the Cryptandra propinqua complex (Rhamnaceae: Pomaderreae). . Proceedings of the Linnean Society of New South Wales . 2007 . 128 . 85–88 . 1 February 2023.
9. Web site: Cryptandra propinqua subsp. propinqua . Australian Plant Census . 1 February 2023.