55 



ROSACEAE: LECOSTEMON— PRUNUS. 



56 



3. LECOSTEMON CRASSIPES Sprucg: foliis elongatis an- 

 guste obovato-cuneatis apice rotundatis abrupte acuminatis , nervis 

 tenuissimis; pedicellis fructiferis valde incrassatis clavatis. 



Lecostcmon crassipes Spruce Mss. Benth. in Hook. Kew- 

 Journ. V. 295. 



Arbor 30-pedalis, ramis adscendentibus , ramulis crassis. Folia 

 fere L. Amazonici sed, ut videtur, longius petiolata, apice rotundata cum 

 acumine abrupto. Panicula fructifera 4—6 poll, longa, erecta, robusta. 

 Pedicklli fructiferi pollicares, fere rubiginosi, valde incrassati, x / % poll, 

 diam., siccitate sublignosi. Drupa ad 1 / 4 poll. diam. 



Habitat in sylvis humidis prope Manaos olim Barra 

 n. i497. Najas. 



Spruce 



4. LECOSTEMON MACROPHYLLUM Spruce: foliis elon- 

 gatis anguste oblongo-lanceolatis v. elongato obovatis in petiolum 



angustatis acutis obtusisve submembranaceis, nervis tenuissimis; 

 racemis gracilibus fasciculatis subsimplicibus. 



Lecostemon macrophyllum Spruce Mss. Benth. in Hook. 

 Kew-Journ. V. 296. 



Frutkx 12 — 20-ped.alis; ramis suberectis; ramulis irregularibus 

 nodosis (Spruce). Folia 8—16 poll, longa, apice varia, subacuta obtusa 

 v. emarginato-2-loba, margine interdum obscure nodoso, utrinque coucolora, 

 subnitida; nervis tenuissimis, cum costa prominula, rectangulum fere for- 

 'maotibus, in nervum intramarginalem confluentibus ; nervulis reticularis; 

 petiolo */, poll, longo. Stipulae non visae. Rackmi simplices v. fere 

 simplices, 2—4 poll, longi, numerosi, rachi pedicellisque ('/ 6 poll, longis) 

 gracilibus. Bractf.ak et bractkolak minutae. Calyx parvus, turbinates 

 v. obconicus, truncatus, ore '/,<, poll. diam. Pktala virescentia, % poll, 

 longa, lineari-oblonga. Stamina ad 40; antherab albae, petalis aequi- 

 longae. Fructus ignotus. 



Habitat in Capoeiras prope Barra, prov. do Alto Amazonas : 

 Spruce n. 140 S. Najas. 



Tbibus II. PRUNEAE. 



Flores symmetrici. Calyx saepissime deciduus, lobis ebracteolatis. Stamina 00, in 

 orbein completum disposita. Carpidium 1, stylo subtcrtuinali. Ovula 2, pendula. Fructus 

 drupaceus, tubo calycis non occlusus. Radicula supera. 



VIII. PRUNUS Linn. 



Pruncs Linn. Gen. n. 620. Benth. et ffooh. f. Gen. I. 609., 



Amygdalum, Armeniacam, Ckraslm et Laurocerasum auctorum in- 



cludens. — Abrunheiro, Ameixeira, Cereijeira, Gin- 



geira etc. lusitanice. 



Calyx deciduus; tubus obconicus urceolatus v. 

 tubnlosus; limbi lobi 5, imbricati. Pktala 5, calycis 

 fauci inserta. Stamina 10 — 40, cum petalis inserta; 

 filamentis filiformibus liberis. Ovarii carpidia solita- 

 ria, rarissime 2 v. plum; stylus termiualis, stigmate 

 peltato v. truncato; ovula 2, collateralia. Drupa car- 

 nosa, putamiue osseo laevi v. rugoso, indehiscens v. 

 2-valvis. Semina peudula; radicula supera. 



An no res v. frutices. Folia alterna, simplicia, 

 saepissime serrulata, vernatione complicata v. convo- 

 luta. Flo res solitarii fasciculato-corymbosi v. in 

 racemos dispositi, albi v. rosei. Fructus saepe edu- 

 lis. — Crescunt pieraeque in hemisphaerio boreali, in 

 America tropica sat numerosae, in Asia tropica 

 rarae, in Africa tropica et australi, America australi 

 frigida, Australia et Polynesia omnino desunt. 



Subgenera (v. si mavis sectiones) sequentia a multis 

 auctoribus pro generibus habentur: 

 Subgen. I. AMYGDALUS Linn. Gen. n. 619. (includens 

 Persicam Town.) — Calyx brevis v. elongatus. Drupa velutina, 

 came (stirpibus feris) dura; putamine rugoso, foraminuloso. — 

 Folia vernatione conduplicata. Flores sub ses sites, e gemma 

 squamosa ante folia erumpentes. Drupa saepe magna. 



Subgen. II. ARMENIACA Juss. Gen. 341. — Calyx brevis 

 v. campanulatus. Drupa velutina, carne pulposa; putamine laevi, 

 utrinque ad margines sulcato. — Folia vernatione convoluta. 

 Flores sessiles v. pedicel Hati, e gemmis squamosis ante folia 

 erumpentes. Drupa majuscula. 



Subgen. III. PRUNUS Juss. Gen. 1. c. — Calyx brevis, ob- 

 conicus v. hemisphaericus. Drupa glaberrima, saepe glauca; puta- 

 mine compresso , oblongo v. ovoideo , laevi v. rugoso. — Folia 

 vernatione convoluta. Flores pedicellati, solitarii v. 2-ni, prae- 

 coces v. foliis coaetanei. 



Subgen. IV. CERASUS Juss. Gen. 340. — Calyx brevis, 

 obconicus v. elongatus, interdum cvlindraceus. Drupa glaberrima, 

 non glauca; putamine laevi v. rugoso. — Folia vernatione con- 

 duplicata. Flores solitarii fasciculati v. umbellati , praecoces v. 

 foliis coaetanei. • 



Subgen. V. LAUR0CERASUS DC. Prodr. II. 539. (sectio). 

 — Calyx brevis, obconicus. Drupa glaberrima, rarissime caesia, 

 oblonga v. globosa; putamine laevi v. rugoso. — Folia vernatione 

 conduplicata. Flores racemosi y axillares v. terminates. Drupae 

 saepissime parvae. 



1. PRUNUS (LAUROCERASUS) SPHAEROCARPA Sw. gla- 

 berrima; foliis oblongis lanceolatisve integerrimis coriaceis sub- 

 longe petiolatis ; racemis axillaribus folio brevioribus ; calvcis tubo 

 subhemisphaerico, lobis brevissimis rotundatis; drupis sphaericis. 



Tabula nostra XIX. 



Prunus sphaerocarpa Loisel. in Nouv. Duhamel V. 4.* ex 

 DC. Prodr. 11. 540. Cham, et Schlecht. in Linnaea 11. 542. 

 Hook. Bot. Mag. t. 3141. 



Prunus sphaerocarpa Swarlz, Fl. lnd. occ. 11. 927. Griseh 

 Fl. Brit. W.-lnd. 231. 



