150 NORTH AMERICAN FLORA [Volume 25 



glands, the sepals oval, 3-4 mm. long; corolla inconspicuous, the petals slightly longer 

 than the sepals, the blades obovate to suborbicular, undulate ; fruits 5 mm. long. 



Type locality : St. Vincent, West Indies. 

 Distribution : St. Vincent. 



4. Spachea Ossana A. Juss. Ann. Sci. Nat. II. 13 : 326. 1840. 



Leaf-blades not known ; panicles about 8 cm. long, tomentose ; calyx with 8 glands ; 

 corolla persistent, the petals decidedly longer than the sepals, the blades obovate, entire 

 or nearly so; fruits 4 mm. long. 



Type locality : Near Havana, Cuba. 

 Distribution : Cuba and St. Vincent. 

 Illustration : Arch. Mus. Paris 3 : pi. 8, f. 9. 



19. THRYALLIS L. Sp. PI. ed. 2. 554. 1762. 



Galphimia Cav. Ic. 5: 61. 1799. 



Shrubs with tall branching stems, sometimes tree-like, or sometimes tufted. Leaves 

 opposite; blades narrow or broad, entire, thin, sessile or petioled. Flowers borne in 

 simple or branched raceme-like panicles, the bracts and bractlets mostly deciduous. Calyx 

 glandless or rarely with small glands ; sepals 5, relatively narrow, persistent. Corolla 

 mostly yellow, sometimes turning red ; petals 5, the blades entire or toothed, abruptly nar- 

 rowed into claws, persistent. Stamens 10, all anther-bearing ; filaments glabrous, united 

 at the base ; anthers glabrous. Ovary 3-lobed. Styles 3, distinct, slender. Stigmas 

 minute. Capsule 3-lobed. 



Type species, Thryallis brasiliensis L. 



Ovary glabrous. 



Leaf-blades petioled. 



Inflorescence branched ; tall shrub. 1. T. glauca. 



Inflorescence simple ; low many-stemmed shrub. 2. T. mullicaulis. 



Leaf-blades sessile. 3. T. sessilifolia. 



Ovary pubescent. 



Petal-blades obtuse or acute ; leaves and sepals glabrous or pubescent, but 

 not woolly. 

 Anthers elongate ; corolla about 2 cm. wide. 

 Calyx with external glands at the base. 



Leaf-glands sessile ; blades of the upper leaves slender-petioled. 4. T. Palmeri. 

 Leaf-glands stalked ; blades of the upper leaves sessile or nearly so. 5. T. humilis. 

 Calyx glandless. 



Twigs and inflorescence-branches glabrous ; leaf-glands sessile. 6. T. dasycarpa. 

 Twigs and inflorescence-branches muricate ; leaf-glands stalked. 7. T. tuberculata. 

 Anthers didymous ; corolla about 1 cm. wide. 8. T. angustifolia. 



Petal-blades apiculate ; leaves and sepals woolly-hirsute. 9. T.vestita. 



1. Thryallis glauca (Cav.) Kuntze, Rev. Gen. 1 : 89. 1891. 



Galphimia glauca Cav. Ic. 5: 61. 1799. 



Malpighia glauca Pers. Syn. PI. 1 : 506. 1806. 



Galphimia glaudulosa H.B.K. Nov. Gen. & Sp. 5: 172. 1821. Not G. glandulosa Cav. 1799. 



Galphimia glandulosa oblongifolia DC. Prodr. 1 : 582. 1824. 



Galphimia glandulosa ovalifolia DC. Prodr. 1 : 582. 1824. 



Galphimia gracilis Bartl. Linnaea 13: 552. 1839. 



Galphimia lalifolia Bartl. Linnaea 13 : 553. 1839. 



Galphimia grandiflora Bartl. Linnaea 13: 554. 1839. 



Galphimia Humboldliana Bartl. Linnaea 13 : 555. 1839. 



Galphimia paniculata Bartl. Linnaea 13: 556. 1839. 



Thryallis gracilis Kuntze, Rev. Gen. 1 : 89. 1891. 



Thryallis ^randiflora Kuntze, Rev. Gen. 1 : 89. 1891. 



Thryallis Humboldliana Kuntze, Rev. Gen. 1 : 89. 1891. 



Thryallis latifolia Kuntze, Rev. Gen. 1 : 89. 1891. 



Thryallis paniculata Kuntze, Rev. Gen. 1 : 89. 1891. 



Plants with tall much-branched stem ; leaf-blades ovate, oblong, or oval, 1-5 cm. long, 

 obtuse or abruptly pointed, more or less glaucous, usually conspicuously so beneath, glabrous, 

 usually abruptly narrowed or truncate at the base, slender-petioled, the glands borne at the 

 base of the blade or on the upper part of the petiole ; panicles often widely branched, usually 

 many-flowered, the rachis pubescent mostly with dark-red hairs or glabrous at least at 



