Preliminary notes on Justicia (Acanthaceae) in Peru Villanueva-Espinoza, Rosa Deng, Yunfei Scotland, Robert Wood, John R. I. PhytoKeys 2025 2025-06-16 258 1 123 3QX6G Wassh. Wassh. Magnoliopsida Acanthaceae Justicia Plantae Lamiales Tracheophyta species reginaldii   Type.   Ecuador• Camino Zaruma– Loja,  1100 m,  May 1958,  R. Espinosa2409 ( holotype US-01106126, isotype K-000544761).   Description. Subshrub to 70 cmin height; stems puberulent when young. Leaves very shortly petiolate, lamina 2.5–5 × 1.5–2.5 cm, lanceolate to ovate, apex obtuse, base cuneate, pubescent; petioles. Inflorescence of terminal bracteate spikes, the flowers in very short axillary spikes, commonly reduced to subsessile opposite pairs; bracts foliose below, diminishing in size to 6 × 2 mmupwards; calyx 5 - lobed to about three quarters its length, lobes oblong, 4–5 × 1 cm, glabrous or puberulent; corolla relatively large, 2.2–2.5 cmlong, gaping, white with purple markings, puberulent, the tube 12–14 mmlong, upper lip erect, hooded, notched, lower lip 3 - lobed, the lobes c. 6 mmlong, rounded; anther thecae parallel, slightly superposed, oblong, 2.5 × 0.75 mm, the lower basally apiculate; pollen prolate-perprolate 43–47 × 27–29 μm, 2 - aperturate, porate, grain covered in verrucae (Fig. 50 C). Capsule 7 mmlong, subglobose, glabrous, 2 - seeded.   Illustration. Fig. 22.   Figure 22.   Justicia reginaldii Ainflorescence Bstem, detail Cupper bracts Dcalyx Ecorolla. Drawn from Ferreyra7070 by Alice Tangerini.   Phenology. March to May.   Habitat. Rocky scrubby mountain sides, 1600–1700 m( 1100 min Ecuador).   Distribution. A rare species restricted to southern Ecuadorand northern Peru. New record for Peru. Fig. 61.   Material examined.    Peru•  Cajamarca: Prov. Cajamarca, Dist. Matará, entre Tingo y San Miguel de Asunción, Chileto, [  7°16'S, 78°16'W],  1600–1700 m,  10 April 1950,  R. Ferreyra7070 ( K, MO, US).   Note. The following specimens from dry forest dominated by  EriothecaSchott & Endl.at 2137–2281 min Ancashand Huánucodiffer in the smaller corolla c. 1.5 cmlong, shorter capsule ( 4–5 mmlong) and slightly smaller calyx. However they share the same terminal inflorescence with axillary flowers, the same gaping corolla and 2 - seeded capsule. The leaves are similar in shape but are very variable in size. They may simply be a variant of the poorly known  Justicia reginaldii.   Additional material examined.    Peru•  Ancash: Prov. Sihuas, Dist. Acobamba, entre Quiches y Jocos, 0.96 kmNW del Puente Isabel Gonzales Lozano,  8°20'36.5"S, 77°31'28.9"W,  2153 m,  6 March 2021, P. González et al.7656 (E, USM); • ibid., 1.53 kmNW del Puente Isabel Gonzales Lozano,  8°20'20.7"S, 77°31'38.7"W,  2281 m, P. González et al.7634 (E, USM).   Huánuco: Prov. Huacaybamba, Dist. Huacaybamba, right bank of Río Marañón,  9°2'9.2"S, 76°59'50.2"W,  2137 m,  25 March 2021, P. González et al.9449 (E, USM). 5196835375 1958-05 R R. Espinosa Ecuador 1100 Camino Zaruma US-01106126, K-000544761 2 Loja holotype 5196835778 1950-04-10 K, MO, US R. Ferreyra Peru Prov. Cajamarca 1650 -7.266667 entre Tingo y San Miguel de Asuncion, Chileto 1303 -78.26667 Dist. Matara 1 Cajamarca 5196835412 2021-03-06 P, E, USM Peru 2153 -8.343472 Puente Isabel Gonzales Lozano 1 -77.5247 1 Ancash 5196835393 2021-03-06 P, E, USM Peru 2281 -8.339083 Puente Isabel Gonzales Lozano 1 -77.52742 1 Ancash 5196835882 2021-03-25 P, E, USM Peru 2137 -9.03589 Rio Maranon 1 -76.99728 1 Huanuco