Published December 15, 2023
| Version v1
Dataset
Open
Table 1. Morphological diagnostic characters delimiting H in Morphological and environmental variation within Hibiscus krichauffianus (Malvaceae), and the recognition of two new species, H. verecundus and H. calcareus
Authors/Creators
Description
Table 1. Morphological diagnostic characters delimiting H. krichauffianus sens. strict., and the three new entities.
| Character | Morphotype A – Hibiscus krichauffianus | Morphotype B – Hibiscus verecundus | Morphotype C – Hibiscus calcareus | Morphotype D – Hibiscus sp. Belele (D.W.Goodall 3417) |
|---|---|---|---|---|
| Substrate preference | Deep sand | Typically shallow soils over sandstone, laterite or basalt | Lime-rich soils | Insufficient data |
| Plant habit | Subshrub or shrub to ~1 m high, usually erect or ascending | Low spreading subshrub or shrub to ~0.5 m high, usually decumbent | Low subshrub to ~0.5 m high, spreading, dome-shaped or rounded | Low or dwarf subshrub or shrub to ~0.3 m high |
| Branchlet indumentum colour | Silvery-white, white, sometimes fading to yellowish-white | Yellowish-brown, sometimes fading to white | White, or silvery-white | White on younger branchlets, older branchlets becoming ferruginous (ferruginous rays and white rays sometimes on the same hair) |
| Stipule width (mm) | 0.16–0.4 | 0.1–0.17 | 0.2–0.5 | 0.2–0.35 |
| Leaf lamina colour (adaxial) | Whitish-silver to grey, becoming greyish-green with age | Green to dark green | Grey to silvery-white | Silvery–ferruginous |
| Leaf lamina shape | Mostly ovate to lanceolate or oblong, occasionally broadly ovate | Ovate to broadly ovate, rarely elliptic–ovate | Ovate, elliptic–ovate or oblong–ovate | Ovate to elliptic–ovate |
| Leaf lamina in transverse | Flat to weakly concave or weakly folded | Flat to weakly concave or weakly folded | Mostly strongly concave to vshaped (and appearing folded on many herbarium specimens) | Flat to weakly folded |
| Leaf lamina length and width (mm) | 10–55 × 5–35 | 9–52 × 8–33 | 6–28 × 4–16 | 17–43 × 6–22 |
| Leaf lamina base | Obtuse, truncate or very broadly cuneate | Broadly cuneate, obtuse or truncate | Broadly cuneate or truncate | Truncate, very slightly cordate or broadly obtuse |
| Leaf lamina margin | Crenate to dentate | Serrate to dentate, rarely crenate | Serrate to dentate or crenate, undulate, sinus between teeth up to halfway to midvein | Dentate to crenate |
| Abcision line (at peduncle–pedicel junction), whether visible and position | Not obvious, obscured by hairs, usually 1–2 mm from the base, rarely up to one-half length from the base | Sometimes obvious, one-third to one-half length from the base | ±Obvious, sometimes obscured by hairs, usually in upper half, 2–17 (–24) mm from the base | ±Obvious, sometimes obscured by hairs, approximately one-third length from the base |
| Number of epicalyx lobes | 5–8 (rarely 10, rarely bifurcating) | 5–7 | 7–8 | 5–6 |
| Epicalyx length (Including fused portion, excluding receptacle) (mm) | 7–16 | 6–10 | 4–14 | 6–12 |
| Fusion of epicalyx lobes at base | Fused for 1–4 mm | Free or fused to 0.5 mm | Fused for 1–3.5 mm | Free or fused for up to 1 mm |
| Epicalyx lobes degree of curvature | Straight in flower, becoming recurved or rarely incurved in fruit | Straight | Straight in flower, becoming recurved in fruit | Straight in flower, becoming recurved in fruit |
| Corolla colour | Pale pink or mauve (rarely white) | Pale pink or white (sometimes drying pale yellow) | Pale pink to mauve, sometimes almost white | Purple |
| Petal length (mm) | 17–35 | 15–28 | 20–44 | 39–42 |
| Seed indumentum | Patchy indumentum of wispy spreading, white to off-white hairs | Short patchy indumentum of appressed white to yellowish-brown hairs | Short patchy indumentum of appressed white hairs | Short patchy indumentum of appressed white to yellowish hairs |
| Seed length (mm, greatest dimension) | 2–3 | 1.7–2.3 | 2.5–3 | ~3 |
| Seed characteristic features or notes | Reniform (rarely subangular–reniform), funicular remnants brown, membranous and wing-like, on either side of the hilum | Two straighter sides almost forming a right angle at intersection, funicular remnants brown, membranous and wing-like, one centrally placed and one on either side of the hilum | Two straighter sides almost forming a right angle at intersection, funicular remnants brown, membranous and wing-like, on either side of the hilum | Two straighter sides almost forming a right angle at intersection, funicular remnants brown, membranous and wing-like, on either side of the hilum |
| Flower cleistogamy | Observed in some specimens | No evidence | Observed in a single specimen | Not observed in material examined |
Notes
Published as part of McLay, Todd G. B., Barker, Robyn M. & Albrecht, David E., 2023, Morphological and environmental variation within Hibiscus krichauffianus (Malvaceae), and the recognition of two new species, H. verecundus and H. calcareus, pp. 459-460 in Australian Systematic Botany 36 (6) on page 459, DOI: 10.1071/SB23003, http://zenodo.org/record/13835582
Files
Files
(6.0 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:79f14231a2be5f9581f9d20b95fa9862
|
6.0 kB | Download |
System files
(11.4 kB)
| Name | Size | Download all |
|---|---|---|
|
md5:060ae90b8c610700255cd1417a542ae1
|
11.4 kB | Download |