752 L. Radlkofer. — Sapindaceae. 



35. L. siamensis Radlk. in Kew Bull. (1914) 279; Craib, Fl. Siam. enum. I. (1926. 

 327. — Sapindus ? siamensis Radlk. in W. G. Craib, Contrib. Fl. Siam, Addit., in Kew Bull. 

 (1912) 265 (fructu illo tempore ignoto) et Contrib. Fl. Siam in Aberd. Univ. Studies 

 Nr. 57, p. 45. — Vulgo : Ma fuang pa (t. Vanpruk in sched.). — Arbor ramis teretius- 

 culis sulcatis, griseo-pubescentibus, cortice nigro-fusco; folia abrupte pinnata, 3 — 4-juga, 

 longiuscule petiolata, rhachi supra bisulcata sordide pubescente in apiculum sterilem 

 subulatum terminata; foliola 5 — 7, inferiora subopposita, superiora alterna, elliptico- 

 oblonga, utrinque obtusa vel subacuta, interdum quodammodo inaequilatera, inferiora 

 latere exteriore, superiora latere interiore ahgustiora brevioraque, integerrima, breviter 

 petiolulata, membranaceö-chartacea, nervis lateralibus utrinque 10—12 sat approximatis 

 oblique erectis venisque reticulatis supra vix, subtus sat prominentibus, supra praeter 

 nervös glabriuscula, e livescenti-viridi in subfuscum vergentia, nitidula, subtus molliter 

 pubescentia pallidiora opaca glandulis microscopicis clavatis superficiei subadpressis 

 (nee ut in Sapindi speciebus in foveolas conchiformes impressis) raris adspersa, epider- 

 mide paginae superioris e cellulis valde convexis granulato-punetatis inanibus conflata, 

 paginae inferioris stomatum copia insigni; panicula terminalis, pauciramosa, rhacheos 

 apice ramisque thyrsoideis dense cymulas (polychasia vel dichasia in cincinnos abeuntia) 

 subsessiles gerentibus, bracteis bracteolisque subulatis pubescentibus; flores unisexuales, 

 $ breviter, § longius pedicellati, oblique symmetrici; sepala 5, breviter oblonga, obtusa, 

 dense albide tomentosa, ciliata, intus subglabra; petala 4 (infimi sede inter sepalum 

 3. et 5. vacua), sub disci margine inserta, subspathulata, lamina ovato-oblonga obtusius- 

 cula coneava, dorso puberula, intus glabra, in unguem lamina paullo breviorem dorso 

 margineque villosum attenuata, supra unguem squamulis 2 deflexis dense villoso- 

 barbatis dorso minutim cristatis aueta; discus (in floris parte superiore ante sepalum 4.) 

 unilateralis, inter petalorum insertiones in lobulos tumens, glaber; stamina 8, intra 

 discum circa pistillum vel pistilli rudimentum inserta, filiformia, floris <§ exserta, 

 floris ^ breviora germen vix superantia sterilia, praeter apicem villosula, antheris 

 breviter ovatis subapiculatis dorso supra basin marginatam affixis introrsis glabris; 

 germen (floris <§ rudimentarium) ad disci marginem inferiorem ante sepalum 3. et 5. 

 insertum, 3-gono-ovatum, 3-sulcatum, 3-loculare, dense albide tomentosum, in stylum 

 germen aequantem subulato-filiformem sursum curvatum pubescentem apice incrassato 

 stigmatosum terminatum; gemmulae in loculis solitariae, prope basin tuberculo axeos 

 insidentes, ereetae, apotropae, campylotropae, micropyle extrorsum infera; fruetus 

 indehiscens trilocularis, trigono-globosus, trisulcato-lobatus, hirtello-tomentosus, intus 

 glaber, pericarpio carnoso cellulis magnis crebris gummi-resina quadam (nee in alcohol 

 nee in aqua, sat facile vero, etsi incomplete, in alcohol aquoso solubili) foetis persito, 

 sicco indurato crustaceo rubro-fusco, endocarpio collenchymatico ; semen ellipticum, 

 a lateribus compressiusculum, pilis brevibus aureo-splendentibus (sat amplis, paehy- 

 dermicis) perlaxe adspersum, testa crassiuscula coriaceo-crustacea fusca, hilo longi- 

 tudinali notata, intus pallidiore laevi reticulato-venosa; embryo carnosus, quodammodo 

 curvatus; cotyledones crassäe, oblique superpositae, superiore majore (piano com- 

 missurali a micropyle supra basin ventrali fere ad tertiam seminis dorsi partem superiorem 

 adscendente), granulis amyli compositis (in fragmenta 5 — 9 partitis) faretae; radicula 

 infra hilum ventralis, punetiformis. 



Rami 3 — 4 mm crassi. Folia petiolo 4 — 6 cm longo adjeeto 20 — 30 cm longa; 

 foliola cum petiolulis 3 — 5 mm longis 10 — 18 cm longa, 4 — 7 cm lata. Paniculae 13 — 

 18 cm longae. Flores 5 mm longi et lati, pedicellis 3 — 6 mm longis, basi articulatis. 

 Fruetus diametro 5 cm, pericarpio (sicco) 1 — 1,5 mm crasso. Semen 4 cm longum, 

 1 cm latum, 2 cm crassum. 



In Siam: Luang Vanpruk n. 119! (Pre, alt. 156 — 240 m), n. 191! (ibid, alt. 

 260 m, m. Maj. 1910, fl.; Hb. Kew.); id. sine n.! (Me Chwa, alt. 150 m, m. Jun. 1913, 

 fl.; Hb. Kew.); Kerr n. 2563! (Läkawn, in savannah, alt. 240 m, m. Maj. 1912, fl. et 

 fr.; comm. ex Hb. Kew.). 



