190 POLEMONIACEAE 



12. TINTINABULUM Rydb. i. T. fili forme. 



13. GILIASTRUM (A. Brand) Rydb. l. G. acerosum. 



Family 110. HYDROPHYLLACEAE. WATEnLE.\F Family. 



Corolla-lobes convolute in bud: placentae dilated. 



Stamens exserted; calyx without appendages; leaves alternate. I. Hydrophyllum. 

 Stamens included. 



Calyx without appendages; leaves opposite. 



Seeds inserted only on the inner face of the placentae, globose, alveolate; 



calyx enlarged in fruit. 2. Macrocwlyx. 



Seeds inserted on both faces of the placentae, oblong or vermiform, rugose; 

 calyx not enlarged in fruit. 3. Eucrypta. 



Calyx with appendages in the sinuses, not much enlarged in fruit; leaves alternate 

 or opposite. 4. Nemophil.\. 



Corolla-lobes imbricate in bud ; placentae not dilated. 

 Styles more or less united; stamens mostly equal. 

 Styles free at the apex. 



Flowers in circinate racemes, or solitary in the axils of the stem-leaves. 

 Calyx-lobes in two series, the outer 3 large and cordate. 13. Tricardi.\. 

 Calyx-lobes in one series, similar or nearly so. 



Corolla deciduous, mostly purplish, bluish, or white. 



Flowers in circinate racemes. 5. Ph.\celia. 



Flowers soUtary in the axils of stem-leaves. 12. Con.\nthus. 

 Corolla persistent, marcescent, yellowish. 



Capsule ovoid, turgid; flowers not drooping. 6. MILTITZIA. 

 Capsule compressed; flowers drooping. 7. Emmenanthe. 



Flowers solitary, from the axils of basal leaves. 8. Capnore.\. 



Styles imited to the apex; flowers racemose, but hardly circinate. 



9. Romanzoffia. 

 Styles free to the base; stamens unequal. 



Capsule coriaceous; shrubs. 10. Eriodictyon. 



Capsule membranous; herbs. 11. MARiL.\trNiDii:rM. 



1. HYDROPHYLLUM (Tourn.) L. Water-leaf. 



Peduncles shorter than the petioles and mostly shorter than the flower-cluster; anthers 

 oblong. 

 Flowers capitate-cymose ; corolla 7-8 mm. liigh. 1. H. capitatum. 



Flowers distinctly pedJceled; corolla 5-6 mm. liigh. 2. H. alpestre. 



Peduncles longer than the petioles ; anthers oblong-linear. 

 Leaf-segments 7-19. 



Di\-isions of the leaves acuminate. 



Stem and leaves sparingly liirsute or glabrous; sepals about equalling the corolla. 



3. H. Fendleri. 

 Upper part of the stem and lower surface of the leaves densely pubescent; sepals 

 much shorter than the corolla. 4. //. albifrons. 



Divisions of the leaves acute, mucronate. 



Leaves hispid beneath; inflorescence dense, subcapitate. 5. H. occidentale. 

 Leaves canescent beneath; inflorescence more open. 6. II. Watsoni. 



Leaf-segments 3-5. 7. H. virginianum. 



2. MACROCALYX Trew. l. M. Nyctelea. 



3. EUCRYPTA Nutt. 



Seeds cylindric, transversely rugose and tubercled. 1. E. micrantha. 



Seeds oblong or oval, deeply favose. 2. E. pinelorum. 



3. NEMOPHILA Nutt. B.\by-blue-eyes. 



Corolla 12-18 mm. long. 1. N. Kirtleyi. 



Corolla 2-3 mm. long. 



Appendages of the corolla present. 



Appendages of the corolla narrow, acuminate; seeds deeply pitted. 



2. N. inconspicua. 

 Appendages of the corolla broad, cuneate; seeds smooth. 3. iV. breri flora. 



Appendages of the corolla wanting. 4. N. explicata. 



5. PHACELIA Juss. Scorpion Weed. 



Stamens equaUing or usually much exceeding the corolla. 



Leaves all simple and entire, or some of the lower pinnately 3-5-divided, with entire 

 divisions; capsule acute; ovules 4. 1. Heterophyll.\e. 



Leaves from sinuate-crenate to twice pinnatifld. 



Plant annual or in one species perhaps perennial, but not cespitose. 



Capsule globular-ovoid, obtuse; ovules 4; stamens in most species long-e.xsertod. 

 Calyx-lobes oblong-spatulate to linear-oblanceolate, scarcely exceeding the 



capsule. II. Glandulc).s.\e. 



Calyx-lobes linear to linear-oblcinceolate, much exceeding the capsule. 



III. RAMO.SISSIMAE. 



