100 NORTH AMERICAN FLORA [Volume 25 



apex ; ovary compressed, obovate, glabrous; style long, persistent ; fruit yellowish, inequi- 

 lateral, or broadly obcordate, mucronate, usually 2-celled, 17-20 mm. long, 16-20 mm. 

 broad; seeds ellipsoid, light- to dark-brown, 10-12 mm. long, about 6 mm. broad, covered 

 with a cream-colored aril ; endosperm thick, bony ; cotyledons flat, thin, oblong or ellip- 

 soid, about 6 mm. long, 4 mm. broad. 



Type locality : Hispaniola. 



Distribution : Bahamas ; Porto Rico ; Jamaica ; Haiti ; Lesser Antilles ; Panama ; also in 

 northern South America. 



Illustrations : Sloane, Hist. Jam. pi. 222, f. 3-5 ; Lam. Tab. Encyc. pi. 342 ; Blackw. Herb. 

 Blackw. pi. 330,/. 1,2; Berg & Schmidt. Darst. Off. Gew. 2 : pi. 14b; Berg, Char. Pfl. Gen. pi. 76, f. 

 553 ; Descourt. Fl. Ant. 7: pi. 463 ; Seba, Thes. 1 : pi. 53, f. 2 ; Woodv. Med. Bot. 3 : pi. 200 ; 

 Hayne, Arzn. Gew. 12 : pi. 23 ; Guimp. & Schlecht. Abbild. pi. 99 ; Bot. Reg. 25 : pi. 9 ; Bentley 

 & Trimen, Med. PI. pi. 41 ; (?) Hughes, Nat. Hist. Barbadoes pi. 9. 



2. Guaiacum sanctum L. Sp. PI. 382. 1753. 



Guaiacum vertical? Ortega, Hort. Matrit. 93. 1798. 



Guaiacum mullijugum Stokes, Bot. Mat. Med. 2: 488. 1812. 



Guaiacum pannfolium Nutt. N. Am. Svlva 3 : 17. 1849. 



Guaiacum Sloahit Shuttlew.; A. Gray, PI. Wright. 1 : 29, as a synonym. 1852. 



Guaiacum sanctum pannfolium Nutt.; Sargent, Silva N. Am. 1 : 63, as synonym. 1891. 



A small evergreen tree, sometimes 10 m. tall ; trunk short and stout, clothed with a 

 thin pale or white bark ; branches pendulous, enlarged at the nodes, somewhat furrowed; 

 young branches pubescent or glabrate ; leaves 4-10 cm. long ; leaflets 4-10, oblong or obo- 

 vate or rarely oblanceolate, 2-3.5 cm. long, glabrous, entire, inequilateral, usually apiculate 

 or mucronate, subsessile, at maturity becoming coriaceous ; stipules pubescent, 3 mm. 

 long, acuminate, usually caducous; flowers terminal, one or several borne on slender 

 pubescent peduncles, which are shorter than the leaves, produced at the ends of the 

 branches from the axils of the upper leaves ; sepals 5, obovate or oblong-obovate, 5-7 mm. 

 long, pubescent and occasionally ciliate ; corolla blue or purple, about 2 cm. wide; petals 

 5, broadly obovate, cuneately narrowed below, 7-11 mm. long, 5-7 mm. broad, rounded 

 at the apex; ovary obovate, prominently 5-angled, glabrous, short-stipitate at the base; 

 fruit broadly obovoid, 14-17 mm. long, 12-14 mm. broad, greenish-yellow to bright-orange, 

 opening at maturity by the splitting of the thick fleshy valves, prominently 5-angled and 

 winged; seeds dark-brown or black, elliptic, 10-11 mm. long, covered with a fleshy scar- 

 let aril; endosperm thick, bony; cotyledons oblong, 6 mm. long, 3-3.5 mm. broad. 



Type locality : Porto Rico. 



Distribution: Keys, South Florida ; Bahamas; Hispaniola; Porto Rico; Yucatan. 



Illustrations ; Sargent, Silva N. Am. 1 : pi. 28 ; A. Gray, Gen. 111. pi. 14S ; Stephenson & 

 Churchill, Med. Bot. pi. 90 [as G. officinale] ; Luerssen, Handb. Syst. Bot. 2: fig. 166 ; Nutt. N. 

 Am. Sylva 3 : pi. 86. 



3. Guaiacum guatemalense Planchon, sp. nov. 



. Guaiacum guatemalense Planch.; A. Gray, PI. Wright. 1 : 59, hyponym. 1852. 



A small tree, about 5 m. high ; stems slender, clothed with a somewhat corky bark ; 

 leaves 3^ cm. long or more; leaflets 8-12, linear-oblong, 14-16 mm. long, 4-5 mm. 

 wide, apiculate, glabrous above, minutely strigose beneath, rather strongly veined ; stip- 

 ules subulate, mostly persisting ; flowers appearing .before the leaves, borne on slender 

 pubescent, peduncles 15-20 mm. long, produced several together from the axils of leaves 

 of preceding years; sepals 5, ovate or oblong, obtuse and rounded at the apex, 5-6 mm. 

 long, the 3 inner nearly glabrous and broader than the 2 outer pubescent ones ; petals 5, 

 oblong-obovate, azure-blue, 10-15 mm. long, raised on a slender claw ; filaments filiform, 

 tapering from a broader flat base; anthers oblong, nearly 2 mm. long; ovary obovate, raised 

 on a slender stalk, tapering at each end ; style slender ; fruit obovate, 10-15 mm. or more 

 long, reddish or orange, with stipe 2 mm. long; seeds solitary, oblong-ovoid, 1 cm. long, 

 pitted, reddish-brown; endosperm thick, bony; cotyledons flat, oblong, thickish, about 6 



—mm. long, 3 mm. wide. 



Type collected on hot plains of Zacapa, Guatemala, Skinner (herb. N. Y. Bot. Gard.). 

 Distribution : Guatemala. 



