Order II. PENTANDRIA DIGYNIA. U5 
584. Calotropis. Cor. with an angular tube : the angles saccate inside. Crown with carlnate leaflets, united 
lengthwise to the tube of the filaments. Pollen-masses pendulous, fixed by the narrow end. Stigma blunt. 
585. Dhchidia. Cor. urceolate, 5-cleft. Corona with subulate, spreading, recurved segments. Pollen- 
masses erect, fixed by the base. Stigma blunt. Follicles smooth. Seeds comose. 
586. Xysmalobium. Cor. 5.cleft, spreading. Corona 10-parted in a 'single row : the 5 divisions next to the 
anthers fleshy, round, simple within, the 5 others small. Pollen-masses pendulous, with lax connecting pro- 
cesses. Stigma blunt. 
587. Gomphocarpus. Corona 5-leaved, the segments simple within. Pollen-masses compressed, pendulous, 
fixed by a fine end. Stigma depressed, blunt. Follicles ventricose, covered with innocuous spines. Seeds 
comose. 
588. Asclepias. Corona 5-leaved, with a process on the inside. Pollen-masses fixed by a fine end. Stigma 
depressed, blunt. 
589. Gonolobus. Cor. rotate, 5-parted. Corona shield-shaped. Anthers opening across, terminated by a 
membrane. Stigma flat, depressed. 
590. Pergularia. Cor. hypocrateriform, with an urceolate tube. Pollen-masses erect, fixed by their base. 
Stigma blunt. Follicles ventricose, smooth. Seeds comose. 
591. Marsdenia. Cor. urceolate, 5-cleft, sometimes rotate. Pollen-masses erect, fixed by the base. Follicles 
smooth. Seeds comose. 
593. Hoya. Cor. 5-cleft. Pollen-masses fixed by the base, conniving, compressed. Stigma depressed, with 
an obtuse wart. Follicles smooth. Seeds comose. 
593. Ceropegia. Outer corona short, 5-lobed ; inner 5-leaved, with ligular undivided leaflets. Pollen-masses 
fixed by their base with simple edges. Stigma blunt. Follicles cylindrical, smooth. Seeds comose. 
594. Stapelia. Cor. rotate, 5-cleft, fleshy. Column of fructification exserted. Pollen-masses fixed by the 
base. Stigma blunt. Follicles cylindrical, smooth. Seeds comose. 
595. Piaranthus. Cor. fleshy. Outer corona none. Pollen-masses fixed by the base, with one edge cartila- 
ginous, pellucid. Stigma blunt. 
596. Huemia. Accessory segments of cor. tooth-like. Leaflets of the inner corona from a gibbous base su- 
bulate, imdivided, alternate with the outer segments. Pollen-masses fixed by the base, with one edge cartila- 
ginous, pellucid. Stigma blunt. Follicles cylindrical, smooth. Seeds comose. 
597. Brachystelma. Cor. campanulate, with angular recesses. Column included. Crown 1-leaved, 5-cleft, 
with the lobes opposite the anthers, simple at back. Anthers without a membrane at the end. Pollenlmasses 
erect, inserted by the base. 
598. Caratluma. Cor. rotate, deeply 5-cleft. Cal. of fructification exserted. Pollen-masses erect, fixed by 
the base with simple edges. Stigma blunt. Follicles slender, smooth. Seeds comose. 
2. Flowers monopetalous, inferior. Fruit a capsule. 
599. Swertia. Caps, of 1 cell. Cor. wheel-shaped, with 2 nectariferous pores at the base of each segment. 
GOO. Gentiana. Caps, of 1 cell. Cor. tubular at the base, destitute of nectariferous pores. 
601. Hydrolea. Caps. 2-valved, 2-ceUed. Cor. rotate, campanulate. Stamens inserted in the tube. 
602. Falkia. Cal. inflated, 5-parted, 5-angular. Cor. campanulate, emarginate, crenate. Styles spreading. 
Stigma globose, wooUy. Seeds 4, globose, with an arillus in the bottom of the calyx. 
603. Dichondra. Cal. 5-parted, with spatulate segments. Cor. short, campanulate, 5-parted. Stigma peltate, 
capitate. Caps, compressed, 2-celled, 2-seeded. Seeds round. 
3. Flowers pentapetalous, inferior. 
604. Velexia. Cal. slender, 5-toothed. Cor. of 5 small petals. Caps. 1-celled, at the end 4-valved. Seeds 
many, attached to a filiform central receptacle. 
605. Bumalda. Cal. 5-parted. Petals 5. Styles villous. Caps. 2-celled, with 2 bractes. 
606. Heuchera. Petals 5. Caps. 2-celled, with 2 bractes. 
607. Cussonia. Invol. O. Cal. 1-leaved, truncated, crenated. Pet. 5, oblong, acute. Fruit twin, 2-celled, 
crowned by the calyx and styles. 
608. Anabasis. Cal. 3-leaved. Pet. 5. Berry 1-seeded, surrounded by the calyx. 
609. Salsola. Caps, closed, imbricated in the fleshy calyx. Seed with a spiral embryo. 
610. Kochia. Cal. 1-leaved, campanulate, in the fruit expanding into a leafy rim resembling 5 petals. Cor. 
O. Stigmas 2-3, long. Caps. 1-celled, 1-2-seeded. Seed incurved. 
611. Chenopodium. Seed lenticular, truncated, superior. 
612. Beta. Seed kidney-shaped, imbedded in the fleshy calyx. 
613. Bosea. Cal. 5-leaved. Cor. O. Berry 1-seeded. 
614. Herniaria. Caps, closed, membranous, invested with the calyx. Stam. with 5 imperfect filaments. 
615. Ulmus. Caps, closed, membranous, compressed, bordered, superior. 
616. Planera. CaL membranous, subcampanulate, 4-5-cleft. Cor. O. Stigmas 2, oblong, glandular, spread- 
ing. Caps, globose, membranous, 1-celled, not opening, either smooth or scaly, not winged, 1-seeded. Stamens 
4-6. Polygamous. 
4. Flowers pentapetalous, superior. 
617. Phyllis. Cal. 2-leaved. Pet. 5. Stigmas hispid. Seeds 2, oblong, fixed to a filiform axis. 
5. Flowers pentapetalous, superior. Seeds 2. (UiUBELLiFERa;.) 
A. Fruit of a single or double globe. 
618. Coriandrum Fruit a single or double globe, smooth, without ribs. Cal. broad, unequal. Petals radiant. 
Floral recept. none. 
B. Fi-uit beaked. 
619. Scandix. Beak much longer than the seeds, fruit somewhat bristly. Cal. none. Pet. unequal, undi- 
vided. Floral recept. 5-lobed, colored. 
620. Anthriscus. Beak shorter than the seeds, even. Fr. rough, with scattered prominent bristles. Cal. 
none. Petals equal, inversely heart-shaped. Fl. recept. slightly bordered. 
621. Chcerophyllum. Beak shorter than the seeds, angular. Fr. smooth, without ribs. Cal. none. Pet. in- 
versely heart-shaped, rather unequal. Fl. recept. wavy. 
C. Fruit solid, prickly, without a beak. 
622. Eryngium. Fr. ovate, clothed with straight bristles. Cal. pointed. Pet. oblong, equal, inflexed, undi- 
vided. FL aggregate. Common recept. scaly. 
623. Sanicula. Fr. ovate, clothed with hooked bristles. Cal. acute. Pet. lanceolate inflexed, nearly equal. 
Fl. separated, dissimilar. 
Echinophora. Fr. ovate, imbedded in the enlarged armed receptacle. Seed solitary. Cal. spinous. 
Pet. inversely heart-shaped, unequal. Fl. separated. 
625. Daucus. Fr. elliptic oblong, compressed transversely. Seeds with four rows of flat prickles, and rough 
^"cc^l" obsolete. Pet. inversely heart-shaped, unequal. Fl. separated. 
. ^«"caZw. Fr. elliptic oblong, compressed transversely. Seed with 4 rows of ascending, awl-shaped, 
hooked prickles, the interstices prickly or rough. Cal. grooved, acute, unequal. Pet. inversely heart-shaped, 
unequal Fl. imperfect, separated. 
627. Torilis. Fr. ovate, slightly compressed laterally. Seeds villous, rough, with scattered prominent, 
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