Jacquemontia robertsoniana Buril & Sim.-Bianch.
Nomenclature
Accepted name/Authority/Place of publication:
Jacquemontia robertsoniana Buril & Sim.-Bianch.
Typus: Brazil, Bahia,Mucugê, Serra do Esbarrancado, 12°43'S 43°30'W,17 April 2005, Conceição & Cardoso 1293 (holotypus HUEFS!).
Description
Habit:
Shrub, erect, few branched, stems tomentose, greyish to ochraceous; tomentum formed by stellate trichomes, 3-rayed, the rays usually equal, c. 0.1 mm, pedunculate. Internodes 0.2 – 0.6 cm long, sometimes shorter.
Leaves:
Leaf blade 1 – 1.6 × 0.9 – 1.3 cm, papery, entire, oval to orbicular or rarely elliptic, oblong, ovate or obovate, base rounded, apex apiculate to acuminate and on the leaves of the terminal branches becoming longer, caudate to obtuse with an acumen, tomentose, greyish; veins not evident. Petiole 0.05 – 0.1 cm long.
Inflorescences:
Inflorescence terminal, compound cymes, capituliform, c. 6-flowered, sessile, terminal; modified bracteoles lacking.
Flowers:
Sepals unequal, 3 outer 0.7 – 0.75 × 0.2 – 0.25 cm, chartaceous, entire, lanceolate to ovate, base rounded, apex long acuminate, 2 lanulose inner 0.55 – 0.6 × 0.1 – 0.15 cm, entire, lanceolate, base rounded, apex acute, puberulent in the central region, with margins membranous. Corolla c. 1.2 cm long, funnelform, weakly lobed between episepalic veins, with sparse trichomes on midpetaline
band on abaxial face, blue. Stamens heterandrous, 2 longer c. 0.6 cm long, 3 smaller c. 0.4 cm long, filament glabrous, anthers elliptic, c. 1.5 mm long, base subcordate, apex rounded. Style c. 0.5 cm long, stigmatic lobes elliptic, oval-flat; nectary absent; ovary c. 1 mm long, glabrous, 2-locular, 2 ovules per locule.
Pollen:
Not known
Fruits:
Not known
Seeds:
Not known
References:
Buril, M.T.; Simão-Bianchini, R. & Alves, M. Jacquemontia robertsoniana (Convolvulaceae), a new shrub species from Brazil. Kew Bulletin 67: 1-5.