60 F. Pax. — Euphorbiaceae-Acalypheae-Mercurialinae. 



14. LasiOCrotOD Griseb. 



Lasiocroton*) Griseb. Fl. Brit. Westind. Isl. (1859) 46; in Abb. Ges. Wiss. Göt- 

 tingen IX. (4 861) 20; Benth. in Benth. et Hook. f. Gen. III. (1880) 317; Pax in Engler 

 u. Prantl, Pflzfam. III. 5. (1890) 53. — Lasiocroton Sect. Eulasiocroton Müll. Arg. 

 in DC. Prodr. XV. 2. (1866) 955. — Conceveiba Sect. Lasiocroton Post et 0. Ktze. 

 Lexicon (1904) 138. 



Flores dioici, apetali. Calyx q^ in alabastro globosus, clausus, demum valvatim 

 5-fidus. Discus annularis. Stamina 6 — 18; fllamenta libera; antherae dorso supra 

 basin affixae, in alabastro erectae; loculi paralleli, dorso connectivo disjuncti, longitu- 

 dinaliter introrsum dehiscentes. Ovarii rudimentum filiforme vel nulluni vel minutum. 

 Sepala Q 5, in aestivatione aperta, sub ovario patentia. Discus hypogynus crassus, 

 pulvinatus. Ovarium 3- vel rarius 4-loculare; styli basi breviter connati, superne pu- 

 tentes, aut bipartiti, lobis in lacinias lineares, plures excurrentibus, aut apice in lacinias 

 breves, subaequales, papillosas divisi; ovula in loculis solitaria. Capsula tridyma, in 

 coccos bivalves a columna centrali dissiliens, tomentosa. Semina ecarunculata, nitida, 

 dorso obsolete carinata; albumen carnosum; cotyledones latae, planae. — Arbor vel 

 frutex, indumento denso, simplici et stellari. Folia alterna, petiolata, estipulata, basi 

 3 — 5-nervia, integra. Spicae axillares, solitariae; bracteae q^ uni- ad multiflorae, brac- 

 teae Q uniflorae, rarius 2-florae. 



Species notae 4, antillanae. 



Clavis specierum. 



A. Folia coriacea, basi ± coi'data. 



a. Folia acuminata. Spicae q? elongatae, distanter glome- 



ruligerae \. L. maerophyllus. 



b. Folia obtusa vel subobtusa. 



a. Spicae q 1 elongatae 2. L. bahamensis. 



ß. Spicae q 1 subcapituliformes 3. L. micranthus. 



B. Folia firme membranacea vel chartacea, basi ± acuta . . 4. L. Fawcettii. 



1. L. maerophyllus (Swartz) Griseb. Fl. Brit. Westind. Isl. (1859) 46; Müll. Arg. 

 in DG. Prodr. XV. 2. (1866) 955. — Oroton maerophyllus Swarlz, Prodr. (1788) 100; 

 Fl. Ind. occ. II. (1800) 1 196; Willd. Spec. pl. IV. (1805) 549. — Frutex,' trunco simplici 

 vel parce ramoso; ramuli pilis simplieibus et stellatis, longe radiatis dense fulvo-sub- 

 floecoso-pubescentes, tarde glabrescentes. Petiolus 2 — 5 cm longus, tomentosus; limbus 

 4 — 18 cm longus, 3 — 10 cm latus, ovatus, basi cordatus, apicem versus acuminatus, 

 acutus, integer, coriaceus, basi 3 — 5-nervius, supra et subtus dense pubescens, subtus 

 prominenter reticulato-venosus. Spicae^ elongatae, demum 10 — 13 cm longae, basi 

 longiuscule nudae; bracteae multiflorae, crassae, trianguläres, extus et intus dense 

 vestitae, 3 mm longae, secus rhachin distanter dispositae cum rhachi subfloccoso-fulvo- 

 pubescentes; racemi Q 2 — 4 cm longi, demum 8 — 14 cm attingentes, laxiflori, basi 

 nudi; bracteae 1 — 2-florae; pedicelli demum 1 cm attingentes. Calyx (j 1 in alabastro 

 globosus, 2^2 m m diametiens, extus dense vestitus; sepala crassa; stamina 13 — 16; 

 discus pilosus; ovarii rudimentum nullum. Sepala Q triangulari-lanceolata, acuta, 

 crassa, extus et intus dense vestita, sub disco patentia; discus crassus, pilosus; ovarium 

 profunde 3— 4-lobum, dense vestitum; styli horizontaliter patentes, secus superficiem 

 involuti, apice papillosi et laciniati. Capsula 7 mm lata, 4 mm longa. Semina glo- 

 bosa, laevia. 



Westindische Provinz: Jamaica (Swartz, March n. 195"!), Great Pedro Bay 

 (Harris n. 9714!), Giants Pen bei Yallahs (Harris u. Britton n. 10 742!). 



*) faioioi = hirsutus; Oroton genus Eupfwbiacearum. Habitus generis nonnihil ad Cro- 

 tonem vel Bernardiam accedit. 



