118 Flora Neotropica tate Condamineae DC. et <strong>Rustia</strong>e Klotzsch, quarum prior calycis limbo lobato v. dentato circumcisse deciduo, corollae fauce villosa, ramulis compressis, stipulis magnis elongatis 2-partitis chartaceis, cymis trichotome corymbosis, ulterior antheris basifixis, poro v. rimula terminali dehiscentibus, stipulis amplis elongatis deciduis discrepat." Urban (1912) added a second species to Picardaea by transferring Macrocnemum cubense Griseb., following a suggestion he encountered in an unpublished manuscript by Britton. Until recently, Picardaea has been treated as genus of two species (Standley, 1918; Liogier, 1963, 1995), but it is here recognized as monotypic (see discussion below). 1. Picardaea cubensis (Grisebach) Britton ex Urban, Symb. Ant. 7: 391. 1912. Macrocnemum cubense Grisebach, Cat. PI. Cub. 124. 1866. Type. Cuba. Guantanamo: Rio Yumuri, 17 Sep 1860-64 (fl), Wright 2661 (holotype, GOET; isotypes, G, GH, HAC, K, P). Figs. 3M, 4E, 8F, 15G,H, 51A-D, 52 Picardaea haitiensis Urban, Symb. Ant. 3: 377. 1903. Type. Haiti. Petionville, 500-600 m, Aug 1893 (fl), Picarda 1129 (B*; lectotype, GH (fragment), here selected). Shrub 4-6 m tall, exceptionally a tree to 15 m tall, commonly much-branched shrubs, rarely singlestemmed trees. Leafy branchlets glabrous, terete, dark-green; older branches terete, grayish brown; lenticels sparse, small. Stipules shallowly triangular, often short-acuminate, glabrous outside, glabrous with basal colleters inside, 1.5-3 x 2.5-3.5 mm, dark green. Leaves 8.2-16.5 x (3-)4-12 cm, L/W 1.5:1 to 2.5:1; oblanceolate to obovate, cuneate to acute at base, obtuse to round at apex, sometimes tapering to a short acumen to 15 mm long; grass-green above and below, foliaceous; drying olive-green, stiff-chartaceous; glabrous above and below; primary and secondary veins glabrous, prominent below, secondary veins 8-12 each side; tertiary veins openly reticulate; petioles 7- 15 mm long, 0.7-1 mm thick, adaxially concave to flattened; domatia (when present) a tuft of yellowish hairs in the axils of secondary veins. Inflorescences corymbose trichotomous paniculate, with opposite decussate lateral branches; (5-)7-15 x angular; bracteoles subtending flowers ca. 0.5 mm long, deltoid. Flowers pedicellate, pedicels (1-)2.5- 4.5 mm long, glabrous to minutely puberulent; hypanthium obconical, 10-12 x 5-6 mm, glabrous to minutely puberulent; flower buds clavate. Calyx cupular, truncate to shallowly lobed (or 5 minute teeth), 2-3 x 7-10 mm, glabrous. Corolla campanulate, 3.2-3.5 cm long, reddish purple (to pinkish) outside, yellowish white inside, camose when fresh; tube basally cylindrical, expanding distally, 10-12 mm long, 5-7 mm wide at base and 15-25 mm wide at the orifice, glabrous outside; pilose below filament attachments, glabrous above, inside; lobes 5, ca. 2/5 of corolla length, 10-16 x 7-9 mm, triangular, glabrous throughout, minutely papillose at margins inside. Stamens 5, subequal, attached 10-12 mm from the base of the tube; filaments 9-12 mm long, glabrous, distally terete, basally flattened-adnate to tube; anthers narrowly elliptic, 5-7.5 x 1-1.5 mm, dorsifixed near the base, base rounded, smooth throughout. Pollen exine reticulate, columellate. Style exserted, 25-30 mm long, glabrous; style branches narrowly oblong, 1.3-2 x 0.3-0.4 mm, stigmatic surface microscopically (40x) papillose. Capsules oblong, acute to obtuse at base, apex truncate, 15-19 x 6.5-8 mm, dark brown to black at maturity, with 3-5 parallel ribs, glabrous to minutely puberulent; disk glabrous. Seeds 0.45-0.64 x 0.22-0.36 mm; irregularly 3-4-angular, horizontally compressed, beige, not winged, truncate at apex, testa reticulate. Distribution (Fig. 52) and ecology. In primary or secondary forests, and in remnants of thickets on cliffs, usually in proximity of rivers, in limestone soil, 50-900 m, of E Cuba and Hispaniola. Flowering specimens were collected in January, February, July, August, October, and November. Fruiting specimens were collected in January, February, March, and August. Conservation status. This is a rare species much threatened by ongoing destruction of the natural vegetation of Hispaniola, and is encountered as a shrub in remnant forests on limestone cliffs (rarely as a tree). The reproductive biology of this species has not been studied. Specimens examined: CUBA. GUANTANAMO: Valley of 7-10 cm, lat- Rio Yumuri, Baracoa, Feb 1941 (fl-fr), Le6n & Matos 19644 eral branches 1-2 pairs, basal portion of axis not (GH, HAC, US); Altos del Yumuri, Aug 1939 (fl), Le6n & Victorin 17235 (GH, HAC, NY, TEX); branched (when present) up to 6 cm long; rachis Gorge of Rio Yamuri, 7-9 Dec 1910 (fl), Shafer 7850 (NY, US); Valley of Rio decussately compressed, rachis and branches glabrous Yumuri, Baracoa, 16 Jan 1960 (fl), Liogier & Acuna 7673 to minutely puberulent; distal cymules usually 3-flow- (HAC); Valley of Rio Yumuri, Baracoa, 25 Nov 1914 (fl), ered; distal bracts 0.5-1.5 x ca. 1 mm, narrowly tri- Ekman 3642 (S).
Systematic Treatment of the Genera Studied 119 - .i. , . . . FIG. 51. Picardaea cubensis (A-C from Wright 2661, GH, isolectotype; D from Le6n 19644, GH). A. Habit of inflo- rescence with terminal leaves and foliage leaf. B. Open flower, with old anthers and exserted style. C. Open anther, dorsal view. D. Mature open capsule, showing typical dehiscence.
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