1	"Flowers paired on axillary peduncles; plants twining or erect"	2
1	"Flowers in +- interrupted spikes on axillary peduncles or at ends of branches; plants twining or trailing (except <i>Lonicera interrupta</i>)"	7
2	"Corolla > 25 mm; plant twining"	"Lonicera japonica"
2	"Corolla < 20 mm; plant erect"	3
3	"Ovaries of flower pair fused or appearing so"	4
3	"Ovaries of flower pair free"	5
4	"Corolla +- yellow, weakly 2-lipped; bracts 1--3 pairs, narrowly lanceolate; ovaries, fruit tightly enclosed by inner, fused bracts, thereby appearing fully fused"	"Lonicera cauriana"
4	"Corolla dark red, strongly 2-lipped; bracts 0 or minute; ovaries, fruits not enclosed by bracts, fused generally > 1/2"	"Lonicera conjugialis"
5	"Bracts not leaf-like, not forming involucre, not enveloping ovaries"	"Lonicera tatarica"
5	"Bracts leaf-like, forming a conspicuous involucre, +- enveloping ovaries"	6
6	"Plant 6--9 dm; corolla yellow, tube +- wider upward; stigma exserted; mtns"	"Lonicera involucrata var. involucrata"
6	"Plant 15--36 dm; corolla yellow, strongly tinged orange or red, tube cylindric; stigma included or +- exserted; coastal"	"Lonicera involucrata var. ledebourii"
7	"Leaf 5--10 cm; corolla 15--50 mm; inflorescence a dense, short spike; upper leaf pair fused around stem; NW, CaR"	8
7	"Leaf 1--8 cm; corolla generally < 15 mm; inflorescence a +- long, interrupted spike; upper leaf pair fused around stem or not; widespread"	9
8	"Corolla orange, weakly 2-lipped; stamens, style +- exserted"	"Lonicera ciliosa"
8	"Corolla yellow-white tinged +- purple, strongly 2-lipped; stamens, style well exserted"	"Lonicera etrusca"
9	"Upper leaf pairs fused around stem; corolla glabrous or not"	10
9	"Upper leaf pairs not fused around stem; corolla often hairy"	11
10	"Stipules +- conspicuous, at least near inflorescence; corolla glandular-hairy or hairy"	"Lonicera hispidula"
10	"Stipules 0; corolla glabrous"	"Lonicera interrupta"
11	"Leaf < 2 &times; longer than wide; n SNH (Butte Co.), Teh, CW, SW"	"Lonicera subspicata var. denudata"
11	"Leaf 3--4 &times; longer than wide; s ChI (Santa Catalina Island), WTR"	"Lonicera subspicata var. subspicata"