Photo by O. Ribeiro in Jalapão, Tocantins, Brazil
Rauh, J.Brom.Soc. 40: 25-6. 1990 ; Trop.Subtrop. Pflanz.75: 8-10. 1990
Plant stemless, somewhat bulbous at the base, growing singly or forming loose groups (fig. 13), flowering up to 70 cm high.
Leaves few, forming a flat rosette up to 9 cm high and up to 20 cm, seldom 24 cm in diameter.
Sheaths broad ovate, up to 2 cm high and 4 cm wide, white, brownish beneath.
Blades narrow-triangular, 8-12 cm long, up to 3.5 cm wide at the base, tapering into a hard, pungent, brown tip, succulent, canaliculate, densely silver-gray lepidote on both sides, strongly nerved on the upper side, laxly serrate with curved, dark brown spines, up to 4 mm long; young blades erect, the elder ones curved back.
Scape axillary, up to 50 cm long, reddish-brown, glabrous.
Scape bracts: the basal ones subfoliate, the upper ones much shorter than the internodes, lanceolate, acute, soon drying off.
Inflorescence 10-15 cm long, simple, rarely branched, with a glabrous, reddish-green rachis and 8-12 laxly arranged, sessile flowers.
Floral bracts lanceolate, up to 4 mm long, acute, entire, greenish-brown, glabrous, much shorter than the sepals;
Sepals ecarinate, obtuse, up to 7 mm long, 3 mm wide, orange-yellow, green tipped.
Petals up to 1 cm long, ecarinate, obtuse, erect, orange-yellow.
Stamens and style included at anthesis; anthers postfloral exserted; filaments white, 8 mm long, free above the short common tube. Style distinct, 1.7 mm long, much shorter than the stamens.
Holotype: Pierre Braun and Esteves Pereira Nr. 690 (9.7.1986)=B.G.H. 68 106, in (HEID).
Distribution: Southeastern Brazil: northern Serra Geral do Parana, 1400 m, on open ground among grasses and low scrub, 1400 m.
A Dyckia marnier-lapostolleo L.B. Smith var. lapostolleo et var. estevesio Rauh differt characteribus sequentibus: Planta non dense pulvinata, sed laxe gregaria. Rosulae tantum usque ad 20, rarius 25 cm diamentientes. Laminae foliorum basi tantum usque ad 3.5 cm latae, utrimque metallice cano-argenteo-lepidotae, supra distincte canaliculatae. Inflorescentiae 30-70 cm longae. Flores tantum 1 cm longi, inodori, subanthesi tantum paulum aperti. Antherae tantum post anthesin exsertae.
Holotypus: Pierre Braun et Esteves Pereira No. 690 (9.7.1986)=B.G.H. 68 106, in herb. inst. bot. system. univ. heidelb. (HEID).
Patria et distributio: Serra Geral do Parana septentrionalis (Estado Goias) terricola apud 1400 m.s.m. inter gramines et suffrutices vel frutices humiles.
Dyckia braunii, named after Pierre Braun (Frechen, W. Germany), the explorer of the Brazilian cactus vegetation, is cultivated in the Botanical Garden of the University of Heidelberg under number 68 106. It is related to Dyckia marnier-lapostollei, which is also distributed in the state of Goias, and grows in similar localities. D. braunii differs from it in the following characteristics: Plant not forming dense cushions as D. marnier-lapostollei, only loose groups. Rosettes smaller, only up to 20 cm, seldom 24 cm in diameter. Blades narrow-triangular, at the base only up to 3.5 cm wide, densely silver-gray (not white grayish) lepidote on both sides and strongly nerved on the upper side. Inflorescence 30-70 cm long. Flowers smaller, only up to 1 cm long, orange-yellow, not bright orange, odorless (not reminiscent of Trimethylamin). Petals erect; anthers exserted only after flowering.