Part 2, 1910] MALPIGHIACEAE 129 



5, the blades relatively broad, sometimes wider than long, toothed or lacerate. Stamens 5, 

 all anther-bearing or two of them reduced to staminodia ; filaments subulate to lanceolate, 

 slightly united at the base; anthers didymous. Ovary 3-lobed. Styles usually united. 

 Samaras usually 3 together, with the lateral wings united and thus orbicular to obovate or 

 with the wings free above and thus cordate or V-shaped. — Among the normal flowers are 

 more or less abnormal ones, usually with a glandless calyx, no corolla, or with 1 or 2 rudi- 

 mentarv petals, a rudimentary stamen, and usually 2 carpels. These flowers are not described 

 in the following treatment. 



Type species, Gaudkhaudia cynanchoides H.B.K. 



Samaras winged all around, the wings orbicular or obovate. 

 Androecium with 5 anther-bearing stamens. 



Sepals less than 5 mm. long ; corolla less than 2 cm. wide. 1. G. pcntandra. 



Sepals over 5 mm. long ; corolla over 2 cm. wide. 2. G '. Arnottiamx. 



Androecium with 3 anther-bearing stamens. 



Leaf-blades sessile or nearly so, narrowed to the base. 3. G. cynanchoides. 



Leaf-blades decidedly petioled, cordate or auricled at the base. 



Samaras mucronate at the base ; leaf-blades relatively long-petioled. 4. G. mucronala. 

 Samaras long-caudate at the base ; leaf-blades short-petioled. 5. G. Webbiana. 



Samaras with the wings distinct at the apex, thus cordate or V-shaped. 



Androecium with 5 anther-bearing stamens. 6. G. Karwinskiana, 



Androecium with 3 anther-bearing stamens. 



Flower-clusters lax ; sepal-glands oval. 7. G. Schiedeana. 



Flower-clusters congested ; sepal-glands linear. 8. G. confer iiflora. 



1. Gaudichaudia pentandra A. Juss. Ann. Sci. 

 Nat. II. 13 : 252. 1840. 

 Leaf-blades ovate-lanceolate to oblong, 3-5 cm. long, rather abruptly short-acuminate, 

 finely pubescent on both sides, paler beneath than above, mostly rounded at the base, short- 

 petioled ; sepals oval, 3-4 mm. long, rounded at the apex, the glands much less than one 

 half the length of the sepal-body; petals yellow, the larger ones 6.5-7.5 mm. long, the 

 blades suborbicular, denticulate ; free portions of the filaments subulate, longer than the 

 tube ; samaras obovate, 8-10 mm. long, each with a dorsal keel. 



Type locality : Near Sultepec, Mexico. 

 Distribution : Mexico. 



2. Gaudichaudia Arnottiana A. Juss. Ann. Sci. 



Nat. II. 13: 252. 1840. 



Hiraea cycloptera H. & A. Bot. Beech. Voy. 2S0. 1836. Not//", cycloptera Moc. & Sessg ; DC. 

 Prodr. 1 : 586. 1824. 



Leaf-blades oblong, ovate-oblong, or oval, 2-7 cm. long, abruptly short- pointed, densely 

 whitish-tomentose or lanate-tomentose and pale beneath, thinly pubescent and bright-green 

 above, mostly rounded at the base, short-petioled ; sepals ovate, 6-7 mm. long, the glands 

 less than one half the length of the sepal-body ; petals yellow, the larger ones 16-18 mm. 

 long, the blades suborbicular or oval, denticulate ; free portions of the filaments subulate, 

 longer than the tube ; samaras obovate, 14-18 mm. long, each with a dorsal ridge. 



Type locality : Near Talisco [Jalisco] . 



Distribution : Mexico. 



Illustration: H. & A. Bot. Beech. Voy.pl. 57. 



3. Gaudichaudia cynanchoides H.B.K. Ncv. Gen. 

 &Sp. 5: 158. 1822. 

 Leaf-blades oblong or nearly so, 2-5 cm. long, acute or slightly mucronate, appressed- 

 pubescent and green above, loosely pubescent and pale beneath, narrowed at the base, ses- 

 sile or nearly so; sepals ovate or ovate-elliptic, 3-4 mm. long, the glands less than one 

 half the length of the sepal-body ; petals yellow, the larger ones 6-7 mm. long, the blades 

 suborbicular, denticulate ; free portions of the filaments subulate, much longer than the 

 tube ; samaras not seen. 



Type locality: Near Valladolid [Morelia], Michoacan. 



Distribution : Mexico. 



Illustration : H.B.K. Nov. Gen. & Sp. pi. 445. 



