PHLOX FAMILY 699 



13. GILIASTRUM (A. Brand) Rydb. 



Perennial or annual herbs. Leaves alternate, from toothed to pinnatifid 

 Flowers perfect, cymose. Calyx campanulate, 5-lobed or 5-cleft; tube- serious 

 in the sinuses and bursted by the fruit; corolla rotate-funnelform, deeply 5-cleft. 

 Stamens inserted near the base of the corolla. Seeds several in each coll muci- 

 laginous when wetted. [Gilia Giliastrurn A. Brand.] 



1. G. acerosum (A. Gray) Rydb. Suffruticose perennial, 1-3 dm. high, 

 very leafy, glandular-puberulent; leaves pinnatifid, with linear-subulate, acerose 

 divisions, glandular-puberulent; calyx glandular-puberulent, 5-6 mm. long; teeth 

 lanceolate, acuminate; corolla blue, nearly rotate, about 1 cm. long; lobes broad Iv 

 ovate, much longer than the united portion. Gilia rigidula acerosa A. Gray. (';. 

 acerosaBritton. Sandy plains and hills : Tex. Kans. Colo. Ariz. Son. Ap- 

 J 1. 



FAMILY 110. HYDROPHYLLACEAE. WATERLEAF FAMILY. 



Perennial or annual, mostly caulescent herbs, with watery sap. Lea 

 alternate, or rarely opposite or in basal rosettes, without stipules. Flowers 

 perfect, regular or nearly so, in scorpioid racemes or cymes, or solitary and 

 axillary. Calyx of 5 more or less united sepals, often appendaged in the 

 sinuses. Corolla 5-lobed, mostly campanulate or funnelform, often ap- 

 pendaged inside, the lobes convolute or imbricate in aestivation. Stamens 

 5, alternate with the corolla-lobes; filaments adnate to the base of the corolla, 

 distinct, often bearded; anthers introrse, versatile. Ovary of 2 united car- 

 pels, 1-celled or 2-cellecl, with parietal placentae; styles more or less united; 

 stigmas often capitate; ovules numerous, or few. Fruit a capsule. Seeds 

 amphitropous; endosperm cartilaginous. [Hydroleaceae.] 



Corolla-lobes convolute in bud; placentae dilated. 



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

 Stamens included. 



Calyx without appendages; leaves opposite. 



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



calyx enlarged in fruit. 2. MACROCALYX. 



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. NEMOPHILA. 



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 solitary 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. 



Corolla deciduous, mostly purplish, bluish, or white. 



Flowers in circinate racemes. ">. PHACELIA. 



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

 Corolla persistent, marcescent, yellowish. 



Capsule ovoid, turgid; flowers not drooping. 0. MILTITZIA. 

 Capsule compressed; flowers drooping. 7. KMMK.N ANTHE. 



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



Styles united to the apex; flowers racemose, but hardly circulate. 



9. ROMANZOFFIA. 



Styles free to the base; stamens unequal. 

 Capsule coriaceous; shrubs. 

 Capsule membranous; herbs. 11- MAKIL.U MDIIM. 



1. HYDROPHYLLUM (Tourn.) L. WATER-LEAF. 



Perennial (all ours) or biennial, caulescent herbs. Leaves alternate, pul 

 cent, lobed, or (in all ours) pinnately divided. Flowers in more or les 

 cymes. Calyx-tube short; lobes 5, narrow, with naked sinuses, 

 blue, or purple; tube short; lobes 5, convolute, each with a linear append:^' 

 within. Stamens 5, exserted; filaments partly pubescent. < >vary 

 pubescent; styles 2-cleft; ovules 4, enclosed by the fleshy placenta.', which i 

 tached at the bottom and top of the ovary. Capsule 2-valved; seeds 



