Table 1.

Plant material and wax yields (whole-sprout extracts include wax from main axis internodes and main axis leaf sheaths).

Species	Species abbreviation	Origin	No. of sprouts	Extracted stem length (cm)	Stem diameter (cm)	Total wax yielda (µg)	Wax covering (µg cm−2)
Subgenus Equisetum
E. arvense, fertile (whole sprouts)	E. arv	S-Plieningen	50	10	0.40	5050	8.0
E. arvense, fertile (internodes)	E. arv	S-Plieningen	40	10	0.40	3578	7.1
E. arvense, fertile (leaf sheaths)	E. arv	S-Plieningen	40	–	–	1660	–
E. arvense, sterile (whole sprouts)	E. arv	S-Plieningen	28	30	0.45	3641	3.1
E. arvense, sterile (branches)	E. arv	S-Plieningen	28	–	–	–	–
E. telmateia, fertile (whole sprouts)	E. tel	Eislingen	17	20	1.00	4897	4.6
E. telmateia, fertile (internodes)	E. tel	Eislingen	30	18	1.00	3448	2.0
E. telmateia, fertile (leaf sheaths)	E. tel	Eislingen	30	–	–	4004	–
E. telmateia, sterile (whole sprouts)	E. tel	Eislingen	30	30	0.95	2932	1.1
E. telmateia, sterile (branches)	E. tel	Eislingen	30	–	–	–	–
E. sylvaticum, fertile (whole sprouts)	E. syl	S-Büsnau	24	18	0.40	8142	15.0
E. sylvaticum, fertile (internodes)	E. syl	S-Büsnau	23	18	0.40	2439	4.7
E. sylvaticum, fertile (leaf sheaths)	E. syl	S-Büsnau	23	–	–	2318	–
E. sylvaticum, sterile (whole sprouts)	E. syl	S-Büsnau	14	25	0.45	5886	11.9
E. sylvaticum, sterile (branches)	E. syl	S-Büsnau	14	–	–	–	–
E. fluviatile (whole sprouts)	E. fluv	S-Büsnau	27	30	0.50	4583	3.6
E. fluviatile (branches)	E. fluv	S-Büsnau	27	–	–	–	–
Subgenus Hippochaete (whole sprouts)
E. hyemale ssp. hyemale first year	E. hy h 1st	S-Kaltental	22	30	0.60	19 548	15.7
E. hyemale ssp. hyemale second year	E. hy h 2nd	S-Kaltental	35	27	0.60	43 855	24.6
E. hyemale ssp. Affine	E. hy aff	Cultivated	10	30	0.70	6693	10.2
E. scirpoides	E. scirp	Cultivated	450	10	0.05	14 412	20.4
E. variegatum	E. var	Cultivated	112	23	0.15	12 996	10.7

^aTotal amount of alkanes, aldehydes, primary alcohols, free fatty acids and alkyl esters. –, values not determined.