BORAGINEAE 129 



skg. ; 4. Bombus hortorum L. 5, skg. ; 5. Halictus nitidiusculus K. 5, creeping into 

 the flowers ; 6. Osmia rufa L. j and $, skg. Also on the hybrid P. angustifolia x 

 P. officinalis, 3 bees i. Apis mellifica L. 5, vainly skg. ; 2. Bombus terrester L. j, 

 skg. ; 3. Osmia rufa Z. J, do. 



The following were recorded by the observers, and for the localities stated. 

 Herm. Muller (Alps), 6 humble-bees, a Bombylius, a Rhingia, and a Vanessa. 

 Schulz, humble-bees and Lepidoptera, also flowers perforated by the former. Mac- 

 Leod (Pyrenees), a humble-bee. 



1983. P. tuberosa Schrank (= P. angustifolia L., according to the Index 

 Kewensts). Haussknecht observed two forms of flower in this species at Kreuznach, 

 i. e. gynodynamous with long calyx, and androdynamous with short calyx. 



1984. P. mollis Wolff". (=P- montana Z^'.). (Kirchner, 'Flora v. Stuttgart,' 

 p. 560; Loew, 'Bliitenbiol. Floristik,' p. 281.) The flowers of this species agree 

 with those of P. officinalis as regards colour change and mechanism, but are in all 

 respects considerably larger. The calyx-tube is 11-14 mm. long, and its lobes 

 3-4 mm. While the corolla is in the red stage its lobes are erect and its diameter 

 only 7-10 mm. By the time it has turned violet the lobes have spread out, increasing 

 the diameter to 15 mm. The length of the corolla-tube up to its throat is 1 1-17 mm., 

 the lower 8-9 mm. being uniformly cylindrical and 1-2-2^ mm. wide, and the upper 

 part gradually widened into a funnel. In short-styled flowers the anthers and stigmas 

 are respectively 9-13 mm. and 5-8 mm. above the receptacle, while in the long- 

 styled ones they are 5-7 mm. and 11-13 "^- Loew adds that the hollow scales 

 not mentioned in descriptions of Pulmonaria in systematic works, are here clearly 

 recognizable as very low, small, hairy, bilobed projections within the corolla-tube. 



Visitors. Loew observed the honey-bee, vainly skg., in the Berlin Botanic 

 Garden. 



1985. P. saccharata Mill. 



Visitors. Loew saw 2 bees, skg., in the Berlin Botanic Garden Melecta 

 armata Pz. 5, and Osmia rufa Z. $. 



6n. Onosma L. 



Homogamous or feebly protandrous Lepidopterid flowers ; with nectar secreted 

 by a disk under the ovary, and stored in the base of the tubular corolla. 



1986. O. stellnlatum Waldst. et Kit. (Schulz, 'Beitrage,' II, p. 112.) In 

 this species the corolla-tube is bright yellowish-white above, passing into a darker 

 shade below, 20-6 mm. in length and 6-8 mm. broad at its widest part. The short 

 bifid tips of the anthers are at about the same level as the limb of the corolla, and 

 their bases are laterally fused together for a short distance. As a rule the anthers 

 dehisce introrsely immediately after the flower opens. They surround the style 

 (20-7 mm. long), which at first does not project beyond them or scarcely so, 

 but subsequently elongates so as to do so for 1-3 mm. The stigma matures 

 at the same time as the anthers, or shortly afterwards. 



Only hawk-moths can suck the nectar legitimately, and Schulz actually saw 

 some of the larger species visiting the flowers in the evening at Bozen, but owing 

 to the unfavourable nature of the ground was unable to capture them. An insect 



DAVIS, lit V 



