Croton grandivelus Baillon (1864: 322)

Pereira, Amanda Da Paixão Noronha, Riina, Ricarda & Caruzo, Maria Beatriz Rossi, 2022, Croton (Euphorbiaceae) of the Brazilian state of Paraná: an annotated checklist, species distribution, and identification key, Phytotaxa 570 (3), pp. 231-274 : 248

17. Croton grandivelus Baillon (1864: 322) .

Lectotype (designated by Sodré et al. 2017): — BRAZIL. São Paulo: s.loc., 1816–1821, A. Saint-Hilaire C2 1358 ( P 00623596 !; isolectotypes A 0047307, P 00623597!) . ( Fig. 9 , K–M)

Croton grandivelus is a subshrub with xylopodium, pubescent leaves (on both surfaces), and denser indument along the margin and veins. C. grandivelus is similar to C. subvillosus , due to subshrub habit, stems branched, and size of leaf blade and petiole. Following the circumscription by Sodré et al. (2022), they can be differentiated by stipules (narrowly lanceolate with numerous glands in C. grandivelus vs. glanduliform, with 5 glands in C. subvillosus ), secondary veins of leaf blade (6–10 pairs in C. grandivelus vs. 9–24 pairs in C. subvillosus ), sepals of pistillate flowers (ovatelanceolate in C. grandivelus vs. triangular, narrow-triangular, or ovate in C. subvillosus ). The species also resembles C. fulvus (see comments under C. fulvus ). The species belongs to sect. Adenophylli subsect. Velamea .

Distribution and habitat:— It occurs in Bolivia and Brazil (MG, MS, PR, SP) ( Caruzo et al. 2020). Subshrubs from open vegetation, usually found in ‘cerrado’, between 550 and 790 m elevation. ( Fig. 10 ).

Phenology:— Flowering from October to February and fruiting from October, November and February.

Representative specimens:— PARANÁ: Arapoti , 25 October 1961, G . Hatschbach 8368 ( HBR, L, MBM, UPCB, US). Jaguariaíva, Casa Nova, 790 m, 04 April 1915, P. K. H . Duse ́n 16973 ( F, NY). Tibagi, Fazenda Monte Alegre, 21 November 1942, G . Ceccatto & J.C.H. Barbosa 36 ( F, RB). Campo Mourão, Cerrado Valtra, 24°00’’52.04’ S, 52°21’47.02”W , 555 m, 18 October 2016, A. P. N . Pereira, F.S. Petrongari & O.L.M. Silva 27 (SP).

Figures

FIGURE 9. Croton glechomifolius. A. Creeping habit. B. Reniform leaves. C. Leaf base with blackish trichomes. The arrow points to a stipitate acropetiolar nectary gland. D. Pistillate flowers with bifid styles. E. Hispid capsules. C. gracilipes. F. Sessile acropetiolar nectary glands. G. Inflorescence with unisexual lower cymules. H. Staminate flower.I. Capsule. J. Pistillate flowers, with bifid styles; arrow points to petals transformed into globose glands (colleters). C. grandivelus. K. Leaf. L. Congested inflorescence. M. Staminate flowers. Photos: A.P.N. Pereira.

FIGURE 10. Map showing the known geographic distributions of Croton grandivelus, C. heterodoxus, C. ichthygaster, and C. lanatus in Paraná state.