Table 2.

Nectar concentrations in percentage sucrose equivalents for genera of Crocoideae and Nivenioideae pollinated exclusively by one of the five pollination catergories listed

Family/genus	Apid nectar	Long-proboscid fly	Moth	Bird	Butterfly	Reference
Crocoideae
Babiana	22.0–42.3	22.0–31.7	26.0–31.7	21.0–25.5	n/a	Manning & Goldblatt (1996), Goldblatt & Manning (in press)
Chasmanthe	n/a	n/a	n/a	10.0–17.3	n/a	Goldblatt et al. (2004a)
Crocosmia	23.2	n/a	n/a	17.4–18.0	17.7–23.3	Goldblatt et al. (2004a)
Geissorhiza	26.3–>50	19.6–29.0	n/a	n/a	n/a	Manning & Goldblatt (1997)
Gladiolus	25.0–44.0	24.8–33.2	20.0–36.4	18.2–35.4	19.5–26.1	Goldblatt & Manning (2004, and sources cited therein)
Hesperantha	21.3–>50	26.4–28.5* 13.7–19.3†	(21.5–)32.0–48.0	n/a	15.4–20.8	Goldblatt et al. (2004b)
Ixia	28	23.7–29.8	n/a	n/a	n/a	Goldblatt et al. (2000a)
Lapeirousia	26.7–34.1	21.1–30.4	27.0–34.1	n/a	n/a	Goldblatt et al. (1995)
Romulea	>50	20.0–23.5	n/a	n/a	n/a	Goldblatt et al. (2002a)
Sparaxis	24.3–41.5	28.2–28.5	n/a	n/a	n/a	Goldblatt et al. (2000b)
Tritonia	38.4	23.2–29.3	n/a	n/a	n/a	Manning & Goldblatt (1997) and unpubl. data
Tritoniopsis	23.8–44.0	29.0–32.0	23.8	24.2	3.5	Manning & Goldblatt (2005)
Watsonia	32.0–33.3	26.3–26.5	n/a	14.5–23.8	n/a	Goldblatt et al. (1999)
Nivenioideae
Klattia	n/a	n/a	n/a	13.2–15.0	n/a	Goldblatt (1993)
Nivenia	29.0	30.0–31.0	n/a	n/a	n/a	Goldblatt (1993)
Witsenia	n/a	n/a	n/a	12.0–13.5	n/a	Goldblatt (1993)

Data for Tritoniopsis species pollinated by both sunbirds and butterflies are not listed—the range for these species is 16.1–27.0. Nectar readings are based on sample sizes of at least five individuals and more often ten: only the major source(s) of data for each genus are provided.

^*Species of the southern African winter-rainfall zone.

^†Species of the southern African summer-rainfall zone.