436 XCV. HYDROPHYLLACE^, Hydrophyllum. 



cohering without a common receptacle, at length separable. — Herbs 



or shrubs. Spikes unilateral. Flowers never yellow. 



1. H. Europium. Hcliotrofe. — Herbaceous ; Zrs. ovate, entire, rugose and 

 tomentose; spikes in pairs. — A delicate annual, native of Europe and 

 still growing on the banks of the Shenandoah at Harper's Ferry ! where NuUall 

 saw it in 1818. Cultivated among stove-plants. Stem 8 — 12' high. Leaves 1 — 

 2' by 8 — 15". Flowers white, mostly in 2, terminal, long, scorpoid racemes. § 

 2. H. Peruvianum. Peruvian Heliotrope. — Shrubby ; Ivs. ovate-lanceolate : 

 fls. in numerous, aggregated spikes. — Native of Peru. A small, elegant green- 

 house shrub, 1 — 2f high. Leaves rough, serrulate, twice as long as wide, on 

 short petioles. Flowers small but numerous, very iragrant, white or tinged 

 with pui'ple. 



Order XCV. HYDEOPHYLLACE^.— Hydrophylls. 



SerlSy shruis or small trees, often hispid. Lvs. alternate, or the lower opposite, often lobed. 

 Fli. in circinate racemes or unilateral spikes, rarely a.xillary and solitary. 

 Cal. 5-cleft, the sinuses usually with reHe.xed appendages, persistent- 

 Cor. Slobed, regular, with 10 melliferous scales near the base.' 

 Sta. 5, inserted into the base of tlie corolla and alternate with the lobes. 



Anth. 2celled, versatile. [from the base of the cavity. 



Ova. free, simple, 1-celled. Style single, terminal, bifid. Stig'mas 2. Placenta 2, parietal or on Btalka 

 Fr.— Capsule invested with the permanent caly,\. 



Sds. few, crustaceous. Embryo conical, in abundant, caililaginous albumen. 

 Genera 16, species 75, chiefly American. Of no known use. 



Conspectus of tlic Genera. 



< Placenta large, fleshy, free. . . Hydrophyllum. 1 



( appendag'd inside with < Sta. exserted. \ Placenta; on the middle of the valves. Fhacelia. 4 



< 5 rnellitiirous grooves, i Stamens included. Sepals very large. . . _ . Ellisia. 2 



Corolla ( destitute of grooves or scales inside. St;iraens as long as the corolla. . ' . Comnanthus. 3 



1. HYDROPHYLLUM. Tourn. 



Gr. vSoip, water, and <pvWov, a leaf; the leaves in Spring hold each a quantity of water. 



Sepals slightly united at base ; corolla campanulate, with 5 longi- 

 tudinal, margined, nectariferous grooves inside; stamens exserted; 

 capsule globose, 2-cellod, 2-valved, 4-seeded, 3 of the seeds mostly 

 abortive ; placenta fleshy, free. — North American herbs. Radical Ivs. 

 on long petioles, pirmatel]/ or p)a'linately veined, cauline alternate. Cymes 

 scorpoid, bractless. 

 * Calyx appendaged hctiveen the sepals at base. Stamens as long as the corolla. 



1. H. APPENDicuLATL'M. Miclix. (Nemophila paniculata. Sprcng.) 



Lvs. hairy, lower ones pinnatifid, cauline palmately 5-lobed, dentate, lobes 

 diverging, and with the long peiioles, ped. and cal. hispid ; sep. lance-subulate, 

 the appendages at the base ovate, acute, 4 times shorter; cor. glabrous except 

 the minute appendages inside; sta. included. — (^ Mich, to la., Plummcr\ and 

 111. to Va., moist woods and bottoms. Stems 1-— lAf high, branched. Petioles 

 1 — 4' long. The leaves are of a .singular form. roundLsh in outline, the broad, 

 acute lobes diverging in a stellate manner; teeth mucronate. Calyx 4 — 5" long, 

 appendages deflexed, 1' long. Corolla blue, on long peduncles. May. 

 * * Calyx iKt appendaged. Filaments much exserted. 



2. H. ViRGiNicuM. Virginian Water-leaf. 



Plant nearly smooth; lvs. pinnatifid aiid pinnate, the segments oval- 

 lanceolate, inciselv serrate; fascicles conglomerate; ped. as long as the peti- 

 oles. — % An inhabitant of wet or moist woods. Can. to Car. and Western 

 States. Stem a foot high, bearing large, roundish tufts of flowers peculiarly 

 distinguished by their exserted stamens and style, which are twice the length 

 of the bell-shaped corollas. Leaves few, on long, clasping petioles, v.ith about 

 5 distinct leaflets, the upper 3 more or less confluent at ba.'^e, all irregularly 

 toothed. Cerollas varying from white to skj'-blue. Jane. 



3. H. Canadense. Canadian Water-leaf. Burr-jlov:er . 



I.Ts. smoothish, palmate, roundish, with 5 — 7 shallow lobes, unequally 



