Jungia woodii D.J.N.Hind

Hind, D. (2004). A New Species of Jungia (Compositae: Mutisieae: Nassauviinae) from Bolivia. Kew Bulletin, 59(2), 311-314. doi:10.2307/4115868

Conservation

Insufficient data available. Until further collections are made it is recorded as DD (Data Deficient), although the label data suggest that it is local, and may indicate a very restricted distribution.

Distribution

Bolivia, La Paz, only known from the type collection.

Ecology

Growing in dense scrub on banks near rivers in deep-sided mountain valleys.

Morphology General Habit

Scrambling shrub to c. 3 m tall

Morphology Leaves

Leaves alternate, petiolate; petioles 4 - 9.5 cm long, terete to slightly ridged (in herbarium material), densely short-pubescent throughout, auriculate at base; auricle sessile, reniform, c. 8 mm long x c. 18 mm wide, margins apparently entire (and revolute in herbarium material), apex rounded, upper surface moderately pubescent, hairs ± erect, lower surface ± densely pubescent, hairs contorted, uniseriate, multicellular and septate with acute apices; leaf lamina 9 - 15 x 8.9 - 14.7 cm (total length from leaf base), (7.9 - 12.3 cm from apex of petiole), dark green above, pubescent but considerably less so than beneath except for dense pubescence over midrib and primary venation, hairs long, simple, sometimes contorted, uniseriate, multicellular and septate with acute apices, lamina 'brownish green' beneath, densely pubescent especially over venation although over areolae lamina is visible beneath indumentum; margins 9-12-lobed, lobes with terminal small slightly thickened rounded protrusions on apices and also on margins between lobes; venation palmate from apex of petiole, primary veins prominent beneath, secondary venation and veinlets forming a prominent reticulum, pubescence dense over all venation

Morphology Reproductive morphology Flowers Florets

Florets 15, hermaphrodite, purple; corolla two-lipped, outer lip with 3-toothed apices, c. 4.5 x 2.2 mm, strongly recurved, glabrous inside and out, inner lip 1.3 mm wide, deeply 2-lobed, lobes c. 3 mm x 0.5 mm, strongly coiled, acute, corolla tube c. 5 mm long, glabrous; style shaft c. 6.5 mm long, glabrous, style base with a conspicuous basal node, glabrous, style arms breaking through the anther cylinder between the apical anther appendages, strongly recurved, long-papillate dorsally towards apices; anther cylinders largely, but not completely exserted, anther collars not discernible, apical anther appendages narrowly-lanceolate, c. 1.3 mm long, purple, apices acute, anther bases conspicuously tailed, basal anther appendages c. 1.5 mm long, entire

Morphology Reproductive morphology Fruits

Achenes c. 1.3 mm long (immature), glabrous, appearing ridged in immature state, apices beakless; carpopodium very conspicuous, annular; pappus setae 6.3 - 7.3 mm long and well exceeding phyllaries, barbellate, creamish.

Morphology Reproductive morphology Inflorescences

Inflorescences c. 16 cm tall x c. 16 cm wide (based on direct herbarium measurements), well branched with lax clusters of capitula towards branch apices, bracteate throughout, bracts small, scale-like and densely pubescent

Morphology Reproductive morphology Inflorescences Capitulum

Capitula small, discoid, pedicellate, pedicels 1 - 4 mm long, densely pubescent, hairs uniseriate, multicellular and eglandular, bracteolate with few bracteoles beneath calyculus; involucre narrowly campanulate, c. 5 mm tall x c. 5 mm diam., calycular bracts 4, c. 2 mm long, apparently uniseriate, narrowly lanceolate, densely tomentose outside but glabrous along a narrow median band inside; phyllaries 10, 4.5 mm long, sub- oblong and widening slightly towards apex, apices truncate with mucronate tip, densely pubescent throughout outside except glabrous scarious margins, hairs uniseriate, multicellular and eglandular, indumentum over midrib darker than paler margins; receptacle paleaceous, flat to slightly convex, glabrous; paleae 7, 4 - 4.5 x 0.7 - 1 mm, innermost often partially to completely conduplicate and enclosing accompanying floret, margins entire to laciniate, surfaces short-pubescent, apices obtuse, outermost only partially enclosing achenes or simply folded and often with outermost margin appearing phyllary-like especially in its indumentum, innermost margin scarious and laciniate between adjoining achenes

Morphology Stem

Stems apparently poorly branched in upper part (lower part unknown), densely pubescent throughout and not apparently glabrescent, hairs uniseriate, multicellular and eglandular with acute apices

Note

The species is named after John R. Ironside Wood, the collector. Jungia woodii compares to J. weberbaueri (sect. Jungia) based on the presence of purple corollas and barbellate pappus setae; it clearly differs in leaf shape and several other characters, such as floret number, size of the outer corolla lip, number of paleae, and colour of the pappus setae. If it were compared with any other members of the section, the suborbicular leaves, the auriculate petiole bases and the purple corollas would separate it from all others. J. woodii belongs in sect. Jungia because of its habit, the possession of essentially oblong phyllaries with truncate mucronate apices, the few- flowered capitula, and the cylindrical beakless glabrous achenes. It is, like J. weberbaurei, exceptional in that it possesses auriculate petiole bases. Harling (1995: 28) described these as 'vestigial stipules' [sic!] in his key to the sections. The one auricle present on the type material of J. woodii looks far from vestigial. In sect. Jungia, J. woodii possesses a combination of characters found in the two distinct groups of species in the section - based on leaf shape and pappus setae type - highlighted in Harling's key to the section (Harling 1995: 100).

Phenology

Flowering time: September - October (based on state of flowering and maturation of achenes).

Type

Bolivia, La Paz, Murillo, c. 15 - 20 km E of summit on descent into Zongo Valley, alt. 2500 m, 19 Sept. 1999, Wood 15029 (holotypus K!, isotypus LPB).