Croton staechadis Baillon (1864: 314)
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publication ID |
https://doi.org/ 10.11646/phytotaxa.263.3.1 |
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persistent identifier |
https://treatment.plazi.org/id/6E7E87A1-FFB9-385D-A8AB-FB1DFD4DF63D |
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treatment provided by |
Felipe |
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scientific name |
Croton staechadis Baillon (1864: 314) |
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9. Croton staechadis Baillon (1864: 314) . Type:— BRAZIL. Minas Gerais: no locality, 1816 (fl), A. Saint-Hilaire cat. B1 1193 (holotype P 00634723!, isotype P 00634724!). ( Fig. 17 View FIGURE 17 , A–L)
Shrubs, 0.5−1.4 m, branches densely covered by brownish indumentum, extremely viscid. Leaves not imbricate, subsessile with the petiole 1 mm long; leaf blade lanceolate to ovate-lanceolate, 3.5−4 × 0.7−1.4 cm, base acute, symmetric, margin regularly serrate to serrulate, with a sessile gland on each tooth, apex acute, discolorous, adaxial surface green, abaxial one reddish, trichomes stellate, dense on both surfaces, trinerved at the base, otherwise penninerved; stipules linear-lanceolate, 4.5 mm long, laciniate-glandulose, glabrous, persistent, viscid. Inflorescences 2 cm long, without a naked sterile zone between the basal pistillate flowers and the apical staminate ones; bracts linear-lanceolate, laciniate-glandulose, trichomes stellate on the adaxial surface, absent on the abaxial one, 5 mm long in the staminate and pistillate flowers. Staminate flowers 8−12 per inflorescence, pedicel 4−5 mm long; sepals 5, triangular-lanceolate, 2 × 1 mm, margin stipitate-glandulose, apex ciliate, trichomes stellate on the adaxial surface, absent on the abaxial one; petals 5, obovate-lanceolate, 1.8 × 0.8 mm, margin entire, basal part and apex ciliate, trichomes stellate on the adaxial surface, absent on the abaxial one; stamens 11, filaments 2.5 mm long, anthers ovoid, 1 × 0.7 mm, glabrous. Pistillate flowers 1−2 at the base of inflorescence, subsessile; sepals 5, triangular-lanceolate, 5 × 2 mm, margin stipitate-glandulose, rarely glandulose along lines on the adaxial surface, trichomes stellate yellowish on the adaxial surface, absent on the abaxial one; petals 5, glanduliform, inconspicuous, 0.2 mm long, sessile; ovary subglobose, 1−1.2 × 1.5 mm; styles multifid, 4 times branched at the base, 1.5−2 mm long, trichomes stellate. Capsules globose, 5 × 5 mm, trichomes stellate brownish; seeds ellipsoid, 4 × 2.2 mm.
Distribution: — Minas Gerais State, Planalto Diamantino, 1082−1548 m elevation ( Fig. 18 View FIGURE 18 ).
Additional specimens examined: — BRAZIL. Minas Gerais: Diamantina, estrada de Diamantina para Milho Verde, 21 January 2005 (fl, fr), D. Medeiros 349 & A.M. Werneck (R); D. Medeiros 350 & A.M. Werneck (R); D. Medeiros 351 & A.M. Werneck (R); D. Medeiros 352 & A.M. Werneck (R); D. Medeiros 353 & A.M. Werneck (R); D. Medeiros 354 & A.M. Werneck (R); D. Medeiros 355 & A.M. Werneck (R); D. Medeiros 356 & A.M. Werneck (R); D. Medeiros 357 & A.M. Werneck (R); D. Medeiros 358 & A.M. Werneck (R); D. Medeiros 359 & A.M. Werneck (R); D. Medeiros 360 & A.M. Werneck (R); D. Medeiros 361 & A.M. Werneck (R); D. Medeiros 362 & A.M. Werneck (R); D. Medeiros 363 & A.M. Werneck (R); D. Medeiros 364 & A.M. Werneck (R); D. Medeiros 365 & A.M. Werneck (R); Biribiri, 22 January 2005 (fl), D. Medeiros 384 & A.M. Werneck (R); D. Medeiros 387 & A.M. Werneck (R). São Gonçalo do Rio Preto, Parque Estadual do Rio Preto, trilha do camping ao Córrego da Lapa, 18º06’−05’27.5”S, 43º20’28−29”W, 20 February 2002 (fl, fr), J.A. Lombardi 4582 (BHCB).
Taxonomic notes: — Croton staechadis was rediscovered during this study. This species is extremely viscid, and the leaves are generally folded in both fresh material and the herborized specimens. The staminate flower differs from the remaining species of subsect. Medea by its calyx with stipitate glands on the margin. In general, this character is restricted to the calyx of the pistillate flowers.
No known copyright restrictions apply. See Agosti, D., Egloff, W., 2009. Taxonomic information exchange and copyright: the Plazi approach. BMC Research Notes 2009, 2:53 for further explanation.