4 



Damfiera,'] Lxiv. goodenovie.e. 107 



Spikes branched. Leaves oblong or lanceolate. Eastern species . 1. D. Linschotc7iiL 



Spikes or racemes long and simple. AVestern species. 



I-caves obovatc or cuneate , ; . 2. D. spidgera. 



Leaves linear-terete. Flowers small 3-D. teres. 



Sect. XL Dicoelia. — Peduncles axillary^ loosely and irregularly cgmose. Ocary 2- 

 celled^ with 1 erect^ linear ovule in each cell. Plants glabrous or nearly so^ with angular 

 or winged stems. 



Leaves lanceolate or linear ..... .' 4. D. trigona. 



Leaves ovate h. D, postraia. 



y 



Sect. IIL Camptospora. — Teduncles axillary or ierminal, \-flowered or irregularly 

 zymase. Ovary (often oblique or gibbous) l-celled, with 1 vertical, horseshoe-shaped 

 ovule. (Seeds usually recurved over a spurious^ 'partial dissepiment,) 



Glabrons or nearly so. Brandies 2- or S-winged. Upper leaves 

 few and small. 

 Leaves oblong or lanceolate. Caljx-tube globular ; lobes con- 



ccalcd in the indumeutuin 6. D. alata. 



Leaves oblong-cuneate. Calyx-tube gibbous ; lobes prominent . 7- D. coronaia, 

 Glabrous or nearly so. Branches terete or sulcate. Leaves few, 

 hriear-tercte. Calys-tnbe very gibbous. 



Howcrs terminal, solitary 8. D. carinata. 



Peduncles axillary, 2- or 3-tlowered ..,..-..• 9. i). sacculata. 

 "oary-tomentose or woolly. Branches terete. Leaves cuneate. 

 Calyx-tube rather oblique 10. -D. incana. 



Sect. IV. ^VL6.KTai-p\eY^,— Peduncles axillary or terminal, solitary or clustered, 1- 

 ^owered or irregularly cymose. Ovary 1-celled, with 1 linear or oblong ovule, erect from 

 tfie base. 



Leaves flat or with recurved margins, stcllate-tomcntose under- 

 neath or rarely glabrous. Hairs of the flowers plumose. 



V|eak, trailing herb. Western species \\. B. hederacea. 



-c^rect shrubs or undershrubs. Eastern species. 

 Leaves orbicular, ovate or ovate-lanceolate. 



Bracts ovate, leafy . • 



Bracts minute lo- ^. ^^^.v..... 



Leaves oblong-lauceolate or almost linear 14. D. lanceolata. 



ca\cs flat or with revolute margins, stellate-toraeutose under- 



Death or on both sides. Flowers stellate-tomentose. 

 Agaves nearly flat. Peduucles cymose, with leafy bracts. -r. . ■ • 



i>eaves cuneate or narrowed into a petiole. Cymes loose . . 15. B. altissma. 

 Leaves ovate to oblong-elliptical, sessile. Cymes very short. 16. D. marifolia. 

 ■leaves mostly narrow, and much revolute. 



i^eduncles mostly very short, Bracteoles small. Eastern , 



species ..... 17- -D. ro&mannijolia. 



Peduncles mostly Longer than the leaves. Bracteoles linear. 



Western species . . . 18. -D. lavandulacea. 



es rigid, not revolute, glabrous when full grown or none, 

 ilairs of the flowers plumose, 

 ^teras terete. 



leaves none or small and linear-terete l^. B.juncea. 



Leaves few, smaU, and flat l^. B, otigophylla 



atema very angular. Leaves oblong or cuneate, flat . • - . Vl. BAoranthifotm. 



12. B.ferruginea, 



13- i>. Brownii. 



leav 



« 



Xl ngid, flat, glabrous when full grown (except B. triloba). 

 xlairs of the flowers rieidly appressed, with parallel branches. 

 Stems angular. Leaves sessile. 



^alyx-teeth prominent. Leaves oblonjj or linear. 



