Padbruggea Miq., Fl. Nederl. Ind. 1(1): 150 (1855), emend. nov. J.Compton & Schrire

Compton, James A., Schrire, Brian D., Koenyves 3, Kalman, Forest, Felix, Malakasi, Panagiota, Sawai Mattapha, & Sirichamorn, Yotsawate, 2019, The Callerya Group redefined and Tribe Wisterieae (Fabaceae) emended based on morphology and data from nuclear and chloroplast DNA sequences, PhytoKeys 125, pp. 1-112 : 58

12. Padbruggea Miq., Fl. Nederl. Ind. 1(1): 150 (1855), emend. nov. J.Compton & Schrire

Diagnosis.

Padbruggea has robust panicles with the peduncle and lateral axes densely brown velutinous (vs. robust panicles with peduncle and lateral axes finely grey-pubescent in Austrocallerya ). Padbruggea has inflated, 4.5-11 cm wide, oblong or obovoid coarsely ridged fruits (vs. inflated, 3-5.2 cm wide, fusiform, finely ridged or striate and torulose pods in Austrocallerya ). Austrocallerya has arching type callosities on the standard petals vs. large papillate callosities in Padbruggea filipes or ridge type callosities in P. dasyphylla and P. maingayi . Padbruggea is distributed from southern China, IndoChina, Indonesia, Malaysia, Thailand to Myanmar whereas Austrocallerya occurs in Australia, New Guinea, and some of the adjacent Pacific islands as far south as New Caledonia and Norfolk Island.

Type species.

Padbruggea dasyphylla Miq.

Genus description.

Scrambling climbers reaching 15-25 m. Stems dark green becoming brown, terete, densely brown pubescent when young, glabrescent. Leaves with 9-19 leaflets, evergreen, pubescent above and below when young, glabrescent or sparsely pubescent at maturity, imparipinnate, rachis 10-30 cm long. Stipules 1-8 mm long, ovate or lanceolate, caducous, pubescent or sericeous externally, glabrous internally. Stipels 1-3 mm long, filiform, glabrous or setaceous (absent in P. filipes ). Leaflets 5-12 × 2-3 cm, oblong, ovate or elliptic, apex acute or acuminate, margins glabrous or ciliate, base rounded or obtuse. Inflorescence an erect terminal, sometimes leafy or cauliflorous panicle 7-35 cm long, peduncle silvery or brown tomentose. Flowers 13-25 mm long, emerging from April - June (July - August P. filipes ). Floral bracts 5-25 mm long, linear-lanceolate, ovate or cupuliform, apex acute to acuminate, densely pubescent externally and internally, margin ciliate, green, (pink or purple in P. filipes ), caducous. Bracteoles 3-6 mm long, narrowly lanceolate, caducous (linear 1 mm long P. filipes ). Pedicels 4-7 mm long, densely pubescent (15-25 mm long, sericeous in P. filipes ). Calyx 4-5 × 5 mm campanulate, green or purple, sericeous externally, glabrous internally, five lobed, teeth acute 1-6 mm long, margins ciliate. Standard 14-25 × 14-22 mm, orbicular, inner surface lilac or pinkish, nectar guide yellow, back of standard pubescent, apex emarginate, callosities of ridge type (papillate in P. filipes ). Wing petals 13-20 × 8-11 mm, violet or pinkish, slightly falcate, glabrous, more or less equal in length to the keel, elliptic, apex rounded, basal claw 4-5 mm long. Keel petals 10-15 × 3-10 mm, white, densely hairy along lower margin externally (glabrous in P. filipes ); navicular, claw 3-10 mm long, apex acute or rounded. Stamens diadelphous, nine fused together, the vexillary one free, all curved upwards at apex, glabrous. Ovary densely pubescent or sericeous, style 3-4 mm long, glabrous, tufted at base, curved upwards at apex, stigma punctate. Pods 10-25 × 5-11 cm, inflated, obovoid, compressed-cuboid or oblong, dehiscent, surface coarsely ridged to rugose, velutinous, subseptate. Seeds 1-2, elliptic-ovoid or prolate-spheroid, 50-80 × 40-45 × 30-45 mm, hilum strap-shaped 16-36 mm long.