Monographs Details: Cassia gilliesii Glaz.
Authors:Howard S. Irwin, Rupert C. Barneby
Authority: Irwin, Howard S. & Barneby, Rupert C. 1978. Monographic studies in Cassia (Leguminosae, Caesalpinioideae). III. Sections Absus and Grimaldia. Mem. New York Bot. Gard. 30: 1-300.
Description:Distribution and Ecology - Habitat not recorded, but to be expected in cerrado near 1000 m, known only from the type-locality, conjectured to be the Sta. Barbara lying due e. of Belo Horizonte on the Piracicaba fork of Rio Doce, near 20° S. in s.-e. Minas Gerais. — Fl. VI — VII.
Brasilien: Minas Geraes, Santa Barbara, Campo (Glaziou n. 14638).
Species Description - Amply leafy shrubs of unknown dimensions (probably 1 m +), finely densely viscid- villosulous throughout and in addition, especially the young stems, lf-stalks and inflorescences, glandular-setulose, the setules arising from yellow base, the foliage bicolored, when dry blackish above, brownish-gray beneath, the paniculate inflorescence scarcely or shortly exserted.
Stipules setiform, 2.5-4 mm, pubescent as the stem, caducous.
Lvs spreading, 6-10 cm, subsessile; pulvinus slightly dilated discolored, ±2 mm; petiole ±2mm, 1-1.2 mm diam, shallowly sulcate; rachis 3.5-6 cm; lfts 3-5 pairs, spreading-ascending from rachis on strongly dilated, densely villous-setulose pulvinule 1.3-1.6 mm, larger upward, in outline obliquely ovate-acuminate or -caudate, mucronate, (1.5-)2-5.3 x 1-2.7 cm, at base moderately oblique, shallowly half-cordate, the entire but minutely undulate margin revolute, the blades thinly chartaceous, above blackish, dull, thinly and very finely villosulous and remotely setulose, beneath paler grayish-brown, densely pallid-papillate, villosulous with short hairs divergent from the setulose veins and erect between them, the midrib, 7-10 pairs of secondary and faint connecting tertiary veins all subfiliform, above yellowish, superficial or slightly elevated, beneath sharply prominulous, the areoles of reticulum flat, hardly recessed.
Inflorescence a complex panicle of leafy-bracteate but distally leafless, subcorymbosely many-fld and distally depauperate 2-5-fld racemes, densely villosulous and yellow-setulose throughout, the axis of each raceme (2-)3-7 cm, the 1 or 2 flowers simultaneously expanded standing near or above level of buds following; bracts brown, linear-lanceolate, 3-5.5 mm, entire or shortly toothed on either side below middle, persistent; pedicels ascending, strongly compressed, 2-2.5 cm, bracteolate 3-5 mm below calyx; bracteoles resembling bracts, slightly smaller; buds ovoid- acuminate, densely yellow-setulose; sepals broadly elliptic to oblanceolate, 9.5-10 x 2.2-3.3 mm; petals (of Absus, poorly known) yellow, up to ± 14 mm; ovary yellow-setulose.
Pod unknown. — Collection: 1.
One of the several amply leafy fruticose cassias native to Sa. do Espinhaço, C. gilliesii resembles C. urophyllidia and C. calixtana, both distantly allopatric in northern Minas Gerais and adjacent Bahia, in having sessile leaves, but differs from both in long-pedicelled flowers subtended by persistent bracts and by sharply long-acuminate flower-buds. The habitally similar C. machaeriifolia, found only to the west of R. Sao Francisco in Minas and Goias, has with petiolate leaves a simpler, racemose or subracemose inflorescence and very much larger flowers. The person honored by the specific epithet gilliesii was not identified by Glaziou; he was perhaps one of the engineers of Anglo-Scottish descent active in the mining industry of the Diamond District.
Distribution:Brazil South America
| Minas Gerais Brazil South America