Mitrasacme

Hairy mitrewort Mitrasacme pilosa, from here.

Belongs within: Loganiaceae.

Mitrasacme is a genus of about forty species of herbaceous plants found in southern and eastern Asia and Australasia, with the majority of species in Australia. Most species grow in open habitats.

Characters (from Conn 1995): Annual herbs, glabrous or with simple hairs. Stems branched or not. Leaves rosulate or in pairs along stem, sessile or subsessile, connected by interpetiolar stipules. Lamina 1- or 3-5-curvinereved. Inflorescences terminal and/or axillary, cymose or solitary in leaf axils. Calyx, corolla and androecium tetramerous. Bracts leafy or sepal-like. Calyx connate basally; lobes about as long as tube, more or less triangular; colleters few or absent. Corolla membranous to thin fleshy; outer surface glabrous; lobes exduplicate-valvate in bud, triangular to elliptic, apex acute. Stamens inserted on lower half of corolla-tube, mostly included; filaments filiform; anthers bilocular. Pistil superior or slightly inferior, glabrous; ovary bilocular, ovules many; styles 2, usually free in their basal portion, connate distally; stigma truncate to two-lobed, anthers and stigma always at same height. Fruit a capsule, dehiscing by apical loculicidal slits, two-horned; horns terminated by style-halves which may be torn loose or remain partly connate. Seeds many, ellipsoid or angular, minutely reticulate or verrucose; testa thin; endosperm fleshy.

Mitrasacme Labill. 1804 A61
    |--M. albomarginata Leenh. 1962 C95
    |--M. ambigua LK14
    |--M. connata LK14
    |--M. distylis BR65
    |--M. elata Brown 1810 [incl. M. elata var. brevicalyx Leenh. 1962] C95
    |--M. epigaea LK14
    |--M. exserta LK14
    |--M. foliosa LK14
    |--M. galbina LK14
    |--M. gentianea LK14
    |--M. graminea LK14
    |--M. hispida LK14
    |--M. indica Wight 1850 [incl. M. alsinoides Clarke 1883 (preoc.)] C95
    |--M. kenneallyi LK14
    |--M. laricifolia LK14
    |--M. laxiceps LK14
    |--M. lutea LK14
    |--M. montana Hooker ex Benth. 1856 A61
    |    |--M. m. var. montana A61
    |    `--M. m. var. helmsii Kirk 1890 [incl. M. hydrophila ms] A61
    |--M. neglecta Leenh. 1962 C95
    |--M. nidulifera LK14
    |--M. novae-zelandiae Hooker 1867 A61
    |--M. nudicalis LK14
    |    |--M. n. var. nudicaulis LK14
    |    `--M. n. var. citrina LK14
    |--M. nummularia LK14
    |--M. paradoxa BR65
    |--M. phascoides LK14
    |--M. pilosa BR65
    |--M. pygmaea Brown 1810 C95
    |    |--M. p. var. pygmaea [incl. M. nudicaulis Benth. 1853 (preoc.)] C95
    |    `--M. p. var. malaccensis (Wight) Hara 1955 (see below for synonymy) C95
    |--M. retroloba LK14
    |--M. scopata LK14
    |--M. scrithicola LK14
    |--M. secedens LK14
    `--M. subvolubilis LK14

Mitrasacme pygmaea var. malaccensis (Wight) Hara 1955 [=M. malaccensis Wight 1850; incl. M. polymorpha Clarke 1883 (preoc.)] C95

*Type species of generic name indicated

REFERENCES

[A61] Allan, H. H. 1961. Flora of New Zealand vol. 1. Indigenous Tracheophyta: Psilopsida, Lycopsida, Filicopsida, Gymnospermae, Dicotyledones. R. E. Owen, Government Printer: Wellington (New Zealand).

[BR65] Black, J. M., & E. L. Robertson. 1965. Flora of South Australia. Part IV. Oleaceae–Compositae. W. L. Hawes, Government Printer: Adelaide.

[C95] Conn, B. J. 1995. Loganiaceae. In: Conn, B. J. (ed.) Handbooks of the Flora of Papua New Guinea vol. 3 pp. 132–188. Melbourne University Press: Carlton (Australia).

[LK14] Lyons, M. N., G. J. Keighery, L. A. Gibson & T. Handasyde. 2014. Flora and vegetation communities of selected islands off the Kimberley coast of Western Australia. Records of the Western Australian Museum Supplement 81: 205–244.