Urvillea. 365 



Proceed. Am. Ac. XLV. 17 (1910) 425, coli. Pringle n. 10380!; P.C. Standley, Trees 

 and Shrubs of Mexico in Contr. U. S. Nat. Herb. XXIII. 3. (1923) 699. - Scandens, 

 fruticosa, subglabra; rami canaliculato-5-sulcati, pube laxa minuta adspersi; corpus 

 lignosum simplex, sulcatum; folia biternata; foliola terminalia ovata, longius petiolu- 

 lata, lateralia ovalia, brevius petiolulata, omnia breviter acuminata, infra acumen 

 utrinque 1 — 2-dentata, membranacea, vix nisi ad nervös praesertim subtus puberula 

 glandulisque microscopicis adspersa, pellucide punctata et lineolata (punctis margine 

 et juxta nervös crebrioribus), laete viridia, attamen opaca, subtus pallidiora, epidermide 

 non mucigera; petioli elongati, sulcati; stipulae late ovatae, scariosae, intus tomen- 

 tosae; thyrsi axillares, petiolos superantes, pedunculo apice bicirroso quam rhachis 

 cincinnigera longiore; cincinni subverticillati, longius stipitati, saepius elongati, 6—15- 

 flori; alabastra subglobosa, nutantia, glabra; flores mediocres; Capsula (immatura) 

 trialata, obovata, glabra, nee nisi glandulis microscopicis adspersa, loculis (ut videtur) 

 sat amplis reticulato-venosis, dorso ala loculo ipso angustiore radiatim venosa cinetis; 

 semen ad medium loculum axi affixum. 



Frutex 1 — 2 m altus. Rami thyrsigeri diametro 5 mm, internodiis circ. 6 cm 

 longis, costis colore rubieundo afflatis. Folia petiolo 9 cm longo adjeeto 32 cm longa, 

 22 cm lata; foliola terminalia cum petiolulo 3 cm longo 16 cm longa, 7,5 cm lata, 

 lateralia cum petiolulo 5 — 10 mm longo 11 — 14 cm longa, 5 — 6 cm lata; stipulae 3 mm 

 longae, 2 mm latae. Thyrsi 12 — 16 cm longi; cincinni cum stipite 4 — 8 mm longo ad 

 15 mm et ultra longi; pedicelli ad 5 mm longi, infra medium articulati. Flores expansi 

 diametro 8 mm, albidi. Sepala elliptica, exteriora minora glabra, interiora 4 mm longa 

 pube cana pulverulenta induta. Petala obovata, in unguem latum attenuata, 3,5 mm 

 longa, 2,5 mm lata, praesertim intus glandulis adspersa; squamae superiores crista 

 emarginata appendiceque deflexa elongata dense barbata, inferiores crista dentiformi 

 instruetae. Tori glandulae superiores oblongae, inferiores orbiculares. Stamina pilosius- 

 cula, antherae glabrae. Germen floris £ rudimentarium, trigono-globosum, stylo 

 aequilongo superatum, floris $ — (non visum). Capsula (immatura) 1,7 cm longa, 1,2 cm 

 lata, styli reliquiis 1,5 mm longis coronata. 



In Mexici civitate Guerrero: Pringle n. 10380! (Iguala canon, alt. 915 m, m. 

 Jul. 1907; comm. Pringle). 



Obs. Species paradoxa, habitu Serjaniam (S. sordidae vel S. mexicanae conformem), fruetu 

 Urvilleam referens. 



Puncta pellucida lineolaeque cellulis secretoriis triplicis generis efficiuntur, in hac specie 

 optime observandis. 



Cellulae puncta efficientes ex ovoideo ample lageniformes ab epidermide paginae superioris 

 per totum staurenehyma et pneumatenehymatis strata superiora transmissae sunt, substantia foetae 

 hyalina in alcohol vix, in aqua facillime solubili, attamen e cellulis illaesis non exsudante, tinetura 

 Jodi aquosa intra cellulas colore flavo tineta, saponino, ut videtur, affini. 



Cellulae lineolas efficientes ab epidermide paginae superioris quasi suspensae intra staurenehyma 

 in ramos 2 — 3 subhorizontaliter divaricatos interdum septatos abeunt, latice resinoso (sicco) in 

 particulas irreguläres acutangulas dirupto in alcohol facillime, non vero in aqua nee in Javellei 

 lixivia solubili, in tinetura Jodi aquosa colore flavo tineto repletae. 



Praeterea ad paginam inferiorem cellulae utriculiformes adsunt binae ternae pluresve seriatae, 

 eodem modo laticigerae, inter venulas et epidermidem vel prope venulas dispositae, lineolas minus 

 ciaras efficientes. 



8. U. filipes Radlk. in Th. Herzog, Siph. nov. Boliv. in Fedde, Repert. VII. (1909) 

 354 et in Herzog, Pflanzenformat. Ost-Boliv. in Engler's Bot. Jahrb. XLIV. (1910) 

 361. — Scandens, fruticosa, pubescens; rami teretiusculi, obtuse 6-costati, costis sub- 

 fuscis (alternatim latioribus) ut et sulei interjeeti virides pube molli griseo indutis; 

 corpus lignosum teres; folia ternata; foliola lateralia ovata breviter petiolulata, termi- 

 nalia subrhombea in petiolulum longiorem attenuata, omnia subacuta, mucronulata, 

 duplicato-serrata, crassiuscule membranacea, utrinque pube molli induta, impunetata, 

 epidermide mucigera; stipulae longiusculae, ovato-lanceolatae; thyrsi rhachi abbreviata 



