Drury, D. G. 1973: Annotated key to the New Zealand shrubby Senecioneae-Compositae and their wild and garden hybrids. New Zealand Journal of Botany 11: 731–784.
Details
Details
Drury, D. G. 1973: Annotated key to the New Zealand shrubby Senecioneae-Compositae and their wild and garden hybrids. New Zealand Journal of Botany 11: 731–784.
Article
Taxonomic concepts
Brachyglottis rangiora Hort.
Brachyglottis repanda Hort.
Descriptions
Pithy, soft-wooded, resinous shrubs, shrub-trees, or trees with cortical stem sclereids; leaves alternate, petiolate, arising from multilacunar nodes, not crowded at the ends of branches; petioles terete in section with a complex internal vasculature; blade pinnatinerved, nerves with a lignified bundle sheath, tomentose below with simple T-shaped hairs; capitula small, heterogamous, discoid, subradiate or radiate, disposed in simple to complex panicles borne terminally on axillary branches; involucral bracts 8(-9) in one whorl; florets 8-17, creamy white; hermaphrodite florets 4-11; corollas actinomorphic, 5-lobed to c. 2/3 way to filament insertion; female florets 4-6 in the outermost whorl; female corollas either tubular and equally 3-5 lobed with staminodes, or subligulate with the inner 1-2 lobes shorter than the outer 2-3 lobed ligule, or ligulate with ligule entire or 2-3 toothed and no longer than the tube; stamen-fllament-collar cylindrical; anther fibrous-layer thickenings polarised; achenes hairy with duplex round-tipped hairs; chromosomes number n=30 (Hair & Beuzenberg 1959) for B. repanda J. R. et G. Forst. and variety fragrans (syn. B. rangiora Hort.)
Lamina folii rotunda aut fere orbiculata, apice aut acuta obtusa, laete viridis; margines integrae aut non profunde sinuatae; fiores (12—) 13-14 (-17), fiores hermaphroditi circa 8.
Differt a Senecione perdicioide Hook. f. laminis ellipticis vel late ellipticis vel rarius late oblongo-ellipticis, subter pilis gossypinis indutis, phyllaris 8, floribus femineis 4-5, floribm hermaphroditis 7-9.
Identification keys
VEGETATIVE KEY TO GROUPS I-VII
1.
Leaves clearly petiolate with the blade and petiole well differentiated, the latter sometimes rather short
Leaves sessile, sometimes with the blade narrowing imperceptibly into a stalk, more rarely with the basal portion of midrib bearing several pairs of pinnae
2.
Margins of leaf blade closely corrugated when viewed edge-on to give a pie-crust finish, but not wavy
Leaf-bearing stem and lower blade surface evident, not completely obscured by persistent felted hair, although occasionally covered with loose cottony hairs
4.
Petioles grooved above for most of their length, shield-shaped in section; eglandular leaf hairs never microscopically T-shaped
Petioles not grooved above for most of their length, rounded in section; eglandular leaf hairs variously microscopically T-shaped (symmetric or asymmetric)
5.
Margins of leaf blade serrate, dentate, sinuately toothed, or sinuate, but not crenate
6.
Primary branches of midrib more or less equally conspicuous, all arising at about the same angle to the midrib (best observed in dried leaves)
Primary branches of midrib near the base of blade longest and most conspicuous, often more acute to the midrib than the upper ones
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP I (see also Senecio cassinioides X ? bellidioides p. 766)
3.
Adult leaves narrowly linear; margins rolled back to the midrib, and waisted at the primary veins, so appearing round-toothed; older stems covered with leaf bases
Adult leaves narrowly elliptic to elliptic-oblong; margins flat and entire; older stems covered with crescentic leaf scars
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP II
1.
Upper blade surface of younger leaves green, usually tacky and aromatic, especially in very young leaves; sometimes margined with a white rim of hair
Upper blade surface of younger leaves completely covered with grey hair, dry and inodorous; margined with a white rim of hair
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP III
1.
Mature leaves perfectly hairless, entire or wavy in outline with projecting hydathodes, not strictly toothed, rather fleshy, turning brown on drying; petioles rounded, not grooved above
Mature leaves with hairy veins on lower surface, margins of blade usually toothed, membranous or coriaceous, remaining green on drying; petioles grooved above
2.
Leaf blades 4-10 × 2-4 cm, narrowly to broadly obovatecuneate to elliptic-oblong in outline, coarsely and irregularly sinuate-dentate to sinuate and subentire
Leaf blades 5-12 × 1-2 cm, narrowly elliptic to narrowly oblong, entire to shallowly sinuate
Leaf blades elliptic to broadly elliptic, more rarely broadly oblong-elliptic, sometimes white-cottony beneath
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP IV
1.
Leaf blades as wide as petioles are long; felted, and rusty buff coloured beneath
3.
Leaf blades rotund to almost isodiametric, rounded to the tip; margins entire or shallowly sinuate; upper surface glossy
Leaf blades broadly ovate, ovate-oblong, to broadly oblong in outline, tapering to the tip; margins triangularly toothed or lobed; upper surface usually matt (glossy in exposed leaves and in the bronze-purple and variegated cultivars)
4.
Blade margins coarsely and sharply double-toothed; young stems and petioles balding, purplish, blackening on drying
Blade margins entire with very small (1 mm) notches at the ends of main veins; young stems and petiole persistently white-felted, green under felted hair
5.
Petioles >5 cm, longer than or equal to ½ width of blade
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP V
1.
Leaves crowded at tips of branches, internodes obscured; leaf blades narrowly elliptic to elliptic in outline
Leaves spaced along the young branches, internodes evident; leaf blades oblong-ovate or oblong-elliptic
2.
Leaves buff-felted beneath, particularly when dried; blades oblong- narrowly ovate; margins sinuately toothed
Leaves greyish-felted beneath, turning yellowish when dried; blades oblong-elliptic; margins serrately toothed
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP VI
2.
Leaf blades persistently grey-hairy above; a prostrate or suberect shrub forming dense clumps up to 20 cm high and 25 cm wide
Leaf blades felted-hairy above when young, becoming green, often with a border of felt or hair at the margin; shrubs or small trees with ascending branches reaching more than 20 cm high and 25 cm wide
4.
Leaf blades broadly elliptic or broadly ovate, dull green and microscopically glandular hairy above; margins entire
Leaf blades narrowly oblong, glossy and without glandular hairs above; margins shallowly round-toothed
5.
Margins of youngest visible leaves rolled towards the stem axis; resin canal present above median petiole bundle
Margins of youngest visible leaves rolled away from the stem axis; resin canal absent above median petiole bundle
7.
Upper blade surface with creamy white trellis-like markings, stronger at the confluences of marginal veinlets; when dried the course of the marginal veinlets is marked by raised resinous ridges
Upper blade surface green throughout, without raised marginal ridges when dried
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
GROUP VII
3.
Leaf blade 1-2 × as long as petiole; leaves crowded at the ends of branches
Leaf blade about 4 × as long as petiole; leaves close-set along the branches
Reproduced with permission from New Zealand Journal of Botany and The Royal Society of New Zealand Te Apārangi.
Cited scientific names
- Brachyglottis 'Alfred Atkinson'
- Brachyglottis J.R.Forst. & G.Forst.
- Brachyglottis myrianthos (Cheeseman) D.G.Drury
- Brachyglottis rangiora Buchanan
- Brachyglottis repanda sensu Hort.
- Brachyglottis repanda var. fragrans D.G.Drury
- Senecio 'Alfred Atkinson' Allan
- Senecio georgii Endl.
- Senecio pentacopus D.G.Drury
Metadata
0928a1cf-6ad5-402d-b5d4-e3d48647ee2a
reference
Names_Plants
21 June 2006
