190 -POLEMONIACEAE 



12. TINTINABULUM Rydb. l. T. filiforme. 



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



Family 110. HYDROPHYLLACEAE. Waterle-^f Family. 



■CorollEi-lobes convolute in bud ; placentae dilated. 



Stamens exserted; calyx without appendages; leaves alternate. 1. Hydbophtllum. 

 Stamens included. 



Calyx without appendages: leaves opposite. 



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



calyx enlarged in fruit. 2. MAcatoCALYX. 



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

 calyx not enlarged in fruit. 3. Euchypta. 



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

 or opposite. 4. Nbmophila. 



Corolla-lobes imbricate in bud; placentae not dilated. 

 Styles more or less united: stamens mostly equal. 

 Styles free at the apex. 



Flowers in ciicinate racemes, or soUtary in the axils of the stem-leaves. 

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

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



CoroUa deciduous, mostly purpUsh. bluish, or white. 



Flowers in circtuate racemes. 5. Phacelia. 



Flowers solitary in the axils of stem-leaves. 12. Conanthus. 

 Corolla persistent, marcescent, yellowish. 



Capsule ovoid, turgid; flowers not drooping. fi. Miltitzia. 

 Capsule compressed; flowers drooping. 7. Emmenanthe. 



Flowers solitary, from the axils of basal leaves. 8. Capnorea. 



Styles united 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. Marilatinidium. 



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



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

 oblong. 

 Flowers capitate-cymose: coroUa 7-8 mm. high. 1. H. capitatum. 



Flowers distinctly pediceled; corolla 5-6 mm. high. 2. H. alpestre. 



Peduncles longer than the petioles ; anthers oblong-linear. 

 Leaf-segments 7-19. 



Divisions of the leaves acuminate. 



Stem and leaves sparingly hirsute 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. H. albifrons. 



Divisions of the leaves acute, mucronate. 



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

 Leaves canescent beneath; inflorescence more open. 6. H. 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. pinetorum. 



3. NEMOPHILA Nutt. Baby-blue-byes. 



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



Corolla 2-3 mm. long. 



Appendages of the coroUa present. 



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



2. N. inconspicua. 

 Appendages of the corolla broad, cimeate; seeds smooth. 3. N. breviflora. 



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



5. PHACELIA Juss. Scorpion Weed. 



Stamens equalling or usually much exceeding the corolla. 



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

 divisions; capsule acute: ovules 4. I. Heterophyllae. 



Leaves from sinuate-crenate to twice pinnatifid. 



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



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

 Calyx-lobes oblong-spatulate to Unear-oblanceolate, sccircely exceeding the 



capsule. II. Glandulos.^e. 



Calyx-lobes linear to Unear-oblanceolate, much exceeding the capsule. 



III. Bamosissimae. 



